[CHK] Terrible FPS with JF-17 in SP missions with heavy combat. Other modules OK.

[J20Stronk]

I've been having awful framerates in the JF-17 with the recent patch. In missions where there is heavy combat taking place nearby, I've been getting no more than 25fps, sometimes dipping as low as 10fps, but only if I am flying the JF-17.

 

If I jump in any other module such as the A-10C, F-18 or F-14, my fps is a stable 55-60fps in the same mission.

 

I have reinstalled the module multiple times, cleaned out my shader folders in my save game directory, ran multiple repairs and even reinstalled various NVidia display drivers. Nothing fixed this issue, which only seems to affect the JF-17.

 

The low performance is still present if I use F2 to jump to other far away units or F11 to jump to a far away airfield AO, but only with the JF. Switching away with other modules will maintain 60fps.

 

I will attach the mission I used to test this fps issue, as well as a .trk, dcs.log file and my graphical settings. I will also attach some screenshot of the framerates and CPU/GPU usage in the scene with various modules. 

 

(F-18 and F-14 modules must be installed to view .trk and play mission.)

 

Specs:

i7-4790K - 4.0 Ghz

16GB RAM DDR3 - 1600Mhz

ASUS GTX 1070 Strix OC to 2048Mhz

32GB Page file on SSD

DCS installed on SSD

 

Settings

 

F-18

 

F-14B

 

 

JF-17

 

(All screens from the same mission, cockpits and assets fully loaded.)

fps.trk FPS test.miz dcs.log

Edited April 23, 2021 by uboats

[uboats]

cannot reproduce

always 50+ fps

spec: 4790k + 32G + hybrid 980TI

Edited April 17, 2021 by uboats

[unknown]

Is this at mission start(after selecting the JF-17 and hit play) or later in the mission?

I get:

- F-18 ~94fps

- F-14 and JF-17 ~91fps

at mission start. HW and settings in the sig, i'm using the 466.11 nvidia driver.

 

 

 

[J20Stronk]

It's later on, after giving the sim a couple minutes to load in all assets, I still get 20-40 fps constantly fluctuating with a <30fps average.

 

I'm just gonna nuke my entire install and start from scratch, seeing as it's not reproducible.

 

UPDATE: completely reinstalled DCS with no mods and only downloaded the JF, F-14 and F-18, and I also made a new Saved Games folder but to no avail. Only in the JF-17, I'm getting terrible fps and stutters, but both other modules I'm getting 60fps. I'm getting frustrated because this wasn't happening before.

Edited April 17, 2021 by J20Stronk

[J20Stronk]

Ok so it seems that this problem only occurs on the 2nd instance of DCS onwards after I boot or restart my PC.

 

The first instance of DCS is fine, JF-17 runs well and I get 60fps+, no stutters like other modules. If I quit DCS and load it up again, flying the JF-17 and only it reduces my framerate to a stuttery mess.

 

 

UPDATE 2: I *FINALLY* managed to fix this issue. I completely formated my SSD and moved the pagefile it had over to another SSD, reinstalled DCS and the newest Nvidia driver again and recreated the Saved Games folder. I also disabled an option in the SSD properties that let Windows compress the files in it to save space. One of those things managed to finally fix my issue.

 

(I have a feeling it was the file compression setting, but it only seemed to affect the JF-17 and not other modules.)

Edited April 17, 2021 by J20Stronk

[uboats]

5 hours ago, J20Stronk said:

Ok so it seems that this problem only occurs on the 2nd instance of DCS onwards after I boot or restart my PC.

 

The first instance of DCS is fine, JF-17 runs well and I get 60fps+, no stutters like other modules. If I quit DCS and load it up again, flying the JF-17 and only it reduces my framerate to a stuttery mess.

 

 

UPDATE 2: I *FINALLY* managed to fix this issue. I completely formated my SSD and moved the pagefile it had over to another SSD, reinstalled DCS and the newest Nvidia driver again and recreated the Saved Games folder. I also disabled an option in the SSD properties that let Windows compress the files in it to save space. One of those things managed to finally fix my issue.

 

(I have a feeling it was the file compression setting, but it only seemed to affect the JF-17 and not other modules.)

 

Orz .... really big project

[Doc3908]

Yeah, my JF17 frame rates dropped down significantly since the 2.7OB upgrade. I haven't tested all my modules, but everything else I've flown so far hasn't seen that big of an impact (if any). With the JF-17, the gameplay becomes literally to a slide show at times, especially during a WVR engagement. I'm not quite ready to go down the route of wiping out my entire SSD and reinstalling from scratch. We'll see how things are in the next patch release. 

[J20Stronk]

It came back...

 

I did all of the things I did last time including formating the SSD and installing the drivers again, but this time it did not fix the issue.

 

Once again only the JF-17 suffers the performance dip, and only the second or later instances after a full system boot/restart. The first DCS launch runs fine.

 

I have absolutely no mods installed, everything is as factory as I could get them.

Edited April 19, 2021 by J20Stronk

[uboats]

4 hours ago, J20Stronk said:

It came back...

 

I did all of the things I did last time including formating the SSD and installing the drivers again, but this time it did not fix the issue.

 

Once again only the JF-17 suffers the performance dip, and only the second or later instances after a full system boot/restart. The first DCS launch runs fine.

 

I have absolutely no mods installed, everything is as factory as I could get them.

 

which mission?

cannot reproduce, i re-run many missions multiple times, either shift-r, quite to ME to re-start, or close dcs and restart

 

[J20Stronk]

2 hours ago, uboats said:

which mission?

cannot reproduce, i re-run many missions multiple times, either shift-r, quite to ME to re-start, or close dcs and restart

 

 

Pretty much every mission, including MP.

 

In the mission above for example I get 20-30fps with the JF, 60fps or more with other aircraft with Active Pause enabled upon spawning and just looking around the scene. If I do pause the entire simulation with the Pause key or Esc key, then I do get 60fps.

 

I have another generated mission with me just sitting at the runway and a battle happening near the airfield. In the JF-17 I get 10-25fps. If I switch it out for the F-18 for example, I get 45-60fps. Same thing as before; pausing using Pause or Esc gives me 60.

 

I don't know what else I can tell you except I do mod the aircraft a lot, but in this case everything is stock; no mods are loaded in either the main install or saved games folder.

 

Even with a clean installation of the game, all mods wiped from my SSD, new Saved Games folder with default settings and at least one instance afterr booting my computer the JF, and only the JF has bad FPS and stutters.

Edited April 20, 2021 by J20Stronk

[uboats]

not sure whether this is relate

[unknown]

@J20Stronk Do you use the "performance" or the "visiual quality" version of the cockpit under the special options tab for the JF-17? I use the "performance" version because i only fly in VR and there the "quality" version is killing performance as soon as the canopy is closed and is much more prone to stuttering(at low level flying) compared to the "performance" version, maybe that makes a difference in 2d too(now)? Maybe worth a try if you use the "quality" version.

[J20Stronk]

41 minutes ago, unknown said:

@J20Stronk Do you use the "performance" or the "visiual quality" version of the cockpit under the special options tab for the JF-17? I use the "performance" version because i only fly in VR and there the "quality" version is killing performance as soon as the canopy is closed and is much more prone to stuttering(at low level flying) compared to the "performance" version, maybe that makes a difference in 2d too(now)? Maybe worth a try if you use the "quality" version.

I tried changing the cockpit too, I'm still getting stutters and low fps.

 

Thing is, it runs perfectly fine the first time I run DCS after booting my computer, then if I quit and restart DCS my fps drops in the JF only, regardless what cockpit I have selected.

 

GPU and CPU usage drop as well, so it's not my system being incapable of running the quality pit.

[J20Stronk]

So I went and also installed DCS 2.5.6 Stable and the issue isn't there. 60+fps with all modules including the JF-17 even after restarting DCS 2.5.6 several times. Reloaded the same mission in 2.7 and bad framerates and stutters in the JF-17 only.

 

I copied over the 2.5.6 JF-17 files minus the JF17_ASM.dll and dcs_manifest.bin over to my OB install just to see if it would magically fix the issue but alas, it didn't.

 

I also uninstalled Windows update KB5001330, nothing changed.

 

I give up. I'm out of ideas. I've tried everything short of reinstalling Windows. I'll just fly something else and hope the next patch magically fixes this.

Edited April 21, 2021 by J20Stronk

[unknown]

I used the mission you posted in your first post to run a test again.

 

1. mission load

- start circle above the ground unit battle zone(AP+altitude hold)

- fps at start 90+

- after couple minutes fps 80-100fps

- at first battles 70-90fps

- at "heyvy-part"(~13-16minutes into the mission) 60-70fps up to 90 if nose of JF-17 is looking away from combat

- but some dips to 55fps for a very short(explosions, AAA, flares) time with jumps back to 70+

- at ~17min+ into the mission fps go back to 80-90+

- esc -> quit -> exit DCS via main menu

2. mission load(essentially the same as 1. mission load)

- start circle above the ground unit battle zone(AP+altitude hold)

- fps at start 90+

- after couple minutes fps 80-100fps

- at first battles 70-90fps

- at "heyvy-part"(~13-16minutes into the mission) 60-70fps up to 90 if nose of JF-17 is looking away from combat

- but some dips to 55fps for a very short time with jumps back to 70+

- esc -> quit to desktop(not via main menu)

3. mission load(looks like average fps is a little lower ~2-5fps)

- start circle above the ground unit battle zone(AP+altitude hold)

- fps at start 85+

- after couple minutes fps 70-90fps

- at first battles 70-80fps

- at "heyvy-part"(~13-16minutes into the mission) 60-70fps up to 90 if nose of JF-17 is looking away from combat

- but some dips to 50fps for a very short time with jumps back to 60-80+

- end test

I can see very short dips below 60fps at the same time in the mission(between 13-16minutes) while the ground battle is at it's peak but most of the time the fps is around 80fps +/- and no drastic noticeable performance problems like you see(below 20). 

Did you try to run the mission without your monitoring tool running(also not in the background)? and only use the in game fps counter?

 

Sorry, i hope this problem will solve itself for you asap. 

[J20Stronk]

Yes, I even uninstalled it.

 

What I did was simply turn on active pause when the mission started and looked around.

 

In the JF looking straight down gave me 30 fps. Looking around give me anywhere from 15-40 fps with a lot of stutters. Meanwhile the other modules gave me 60+fps no stutters no matter where I'm looking.

 

If I run this same mission in DCS 2.5.6, then the issue isn't there. The JF-17 runs perfectly fine.

[DarkStar79]

Feels like i have similar problems. I was flying the F14 on DDCS server and everything was smooth.  Then I jumped in the JF17 and it was very stuttery.  I even tried to disable the ground radar and the TGP but it was still there.  I have no ide what it can be.  I have to test more thou to be sure.

[J20Stronk]

Today's patch didn't fix it. I think I'm done for now.

[uboats]

try attached collision model

JF-17-collision.edm

[J20Stronk]

42 minutes ago, uboats said:

try attached collision model

JF-17-collision.edm 65.75 kB · 2 downloads

Unfortunately it didn't fix it.

 

Second run of DCS and after, 20-40fps instead of 60-80 in the same mission above, only in the JF-17.

 

However it does appear to be only inside the cockpit now. I do get 60+ fps when in external views.

[uboats]

8 hours ago, J20Stronk said:

Unfortunately it didn't fix it.

 

Second run of DCS and after, 20-40fps instead of 60-80 in the same mission above, only in the JF-17.

 

However it does appear to be only inside the cockpit now. I do get 60+ fps when in external views.

 

I see. let's wait for next update. then may need your help to debug (comment out device and indicator in device_init.lua one by one to figure out which contribute the fps drop), since we cannot reproduce.

 

Edited April 26, 2021 by uboats

[J20Stronk]

Just now, uboats said:

 

I see. let's wait for next update. then many need your help to debug (comment out device and indicator in device_init.lua one by one to figure out which contribute the fps drop), since we cannot reproduce.

 

Will do.

 

Just re-formatted SSD and reinstalled DCS OB in a clean state again. Still getting bad fps. I will try de-bugging device_init.

[Doc3908]

If it makes you feel better, I have the same issues. Just flew a single-player mission against an AI F-5 and had to quit after 2min - it literally is a slide show. I can post  a video if anyone cares to see. I had a hard time moving the TDC around, too. I had clouds turned on but on the minimal setting (light and scattered). Nothing else except my Jeff and the F5. My set up is i7-8500, 24GB, 1080GTX, 1TB SSD. (I wonder how multiplayer will be...)

[J20Stronk]

Okay so I think I finally fixed it for real this time.

 

I went into the Windows 10 settings and disabled Game Mode and Hardware-Accelerated GPU scheduling.

 

I rebooted my PC and that seems to have fixed my issue for now. I loaded the same mission plus another one with heavy combat nearby, both 60-70fps, high GPU usage and no stutters.

 

I quit the game 5 times and did not experience the bad performance from before.

 

Hopefully it's fixed for real and isn't just placebo until it decides to crap on me again.

 

EDIT: nvm, back to suffering...

Edited April 30, 2021 by J20Stronk

[unknown]

15 hours ago, J20Stronk said:

I went into the Windows 10 settings and disabled Game Mode and Hardware-Accelerated GPU scheduling.

I disabled these optins too after installing Win 10 pro. One last shot, i use a fixed windows page file of 32768 for both (start/allocated...something like that, i don't use an english windows), was recommended because i had some trouble with energy saving mode....if you haven't already set this up it is maybe worth a try?

 

EDIT: Sorry, just forgot that you had/have this already set up(first post). I should stop posting in a rush...

Edited April 30, 2021 by unknown