Intermittent consistent stutter

[SWAR1]

Any one experience this in VR? I'm using multithread, 13900k, 4090, windows 10 and a pimax Crystal. Everything will be running fine, frame rate well below what is required for 72hz then all of a sudden I will get a bout of nonstop stuttering and it will last for 20-30 seconds then go away for a while and repeat. I have tried slow repair, drivers , uninstalling and reinstalling all Pimax software, lowering settings, windows repair, checked for driver updates and so on. Nothing has changed it so far. It will even do it in menu or lobby. Here is a video example of what is going on, you can see it in the graph.

Any ideas would be greatly appreciated as it is driving me nuts....lol

[TOViper]

Hey SWAR1,

maybe "Hotplug" causes this trouble?
You may try to disable it and see if it helps.

Also, check that your windows swap file is big enough.

Just two out of one million tricks ...

Edited March 20, 2024 by TOViper

[SWAR1]

What do you mean by swap file?

 

[TOViper]

Erm, its the Windows "pagefile". You can reach the controls for that in the Windows Control Panel > Advanced System Settings, ...

Edited March 21, 2024 by TOViper

[SWAR1]

ok got ya, yea my page file I have tried changing to all different sizes. No help. This stutter just comes and goes whenever it wants. I have tried taking off my OC, changing saved games file, repairs, turning setting up/down/hotplug/appdata/....searched the forums and tried everything I could find on here. I did a windows repair, refresh..

 

[Gryzor]

4 hours ago, SWAR1 said:

ok got ya, yea my page file I have tried changing to all different sizes. No help. This stutter just comes and goes whenever it wants. I have tried taking off my OC, changing saved games file, repairs, turning setting up/down/hotplug/appdata/....searched the forums and tried everything I could find on here. I did a windows repair, refresh..

 

I have some "periodical" stutters that appears and disappears like your video. However, its not so noticeable, it is very faint, but makes some hicups during flight (quest 3, 7800x3d, 4090, ssd 990pro, 64 gb...). Appears and disappears with no visible cause... I think its the software.

[darkman222]

To bump this thread and to raise awareness to that it might be related to the LOD switching which might have been changed from 2.8 to 2.9

Have a look at the thread I created right after 2.9 was released.

My latest test was to revert to 2.8 where performance was good. Correct me if I am wrong but if a simple revert to 2.8 gets rid of the stutters, then it's not a faulty driver or Hardware or anything else that suddenly caused the stutters. It's DCS 2.9 only which causes the stutters.

I am really sick of comments making me look for the cause on my end. Also comments like it's running fine on a 2d monitor. I am pretty sure it's there too. But people don't notice as 2D stutters are not as obvious.

Edited April 2, 2024 by darkman222

[BIGNEWY]

Just now, darkman222 said:

To bump this thread and to raise awareness to that it might be related to the LOD switching might have been changed from 2.8 to 2.9

Have a look at the thread I created right after 2.9 was released.

My latest test was to revert to 2.8 where performance was good. Correct me if I am wrong but if a simple revert to 2.8 gets rid of the stutters, then it's not a faulty driver or Hardware or anything else that suddenly caused the stutters. It's DCS 2.9 only which causes the stutters.

I am really sick of comments making me look for the cause on my end. Also comments like it's running fine on a 2d monitor. I am pretty sure it's there too. But people don't notice as 2D stutters are not as obvious.

Please try to understand that not all issues are the same, and everyone's machines are different. Please keep the bug reports for data and use your own thread for the issue you are seeing, I have asked others to check it also as I can not reproduce. Lets not derail other peoples threads. 

 

On 3/20/2024 at 10:46 PM, SWAR1 said:

Any one experience this in VR? I'm using multithread, 13900k, 4090, windows 10 and a pimax Crystal. Everything will be running fine, frame rate well below what is required for 72hz then all of a sudden I will get a bout of nonstop stuttering and it will last for 20-30 seconds then go away for a while and repeat. I have tried slow repair, drivers , uninstalling and reinstalling all Pimax software, lowering settings, windows repair, checked for driver updates and so on. Nothing has changed it so far. It will even do it in menu or lobby. Here is a video example of what is going on, you can see it in the graph.

Any ideas would be greatly appreciated as it is driving me nuts....lol

 

Please include a track replay, your dcs log from the session and your dxdiag, we can look for clues to try and assist you 

thank you 

[SWAR1]

 

I think this is what you need.

 

dcs.log DxDiag.txt mobettametas_Dogfight_Arena_-_Caucuses_-_v2.08.1-20240412-164600.trk

Edited April 12, 2024 by SWAR1

[SWAR1]

or am I not doing that correctly?

 

[The_Nephilim]

Hello, How many NI flights were in this server? I see you use tacview that could be the cause here?? also do  you use motion reprojection?

Edited April 13, 2024 by The_Nephilim

[SWAR1]

tacview is usually off, no motion reprojection. it happened right at the end

 

it is so random but goes on for 20-30 seconds you can see in the video it is a very consistent equal wave 

[Tom Kazansky]

I see something similar.

Even when the game is paused, it looks like:

Although I don't see a FPS drop in the FPS-display above, the game is not smooth anymore, especially when looking left or right to the side of the cockpit.

Everything is butter smooth again after those saw tooth like frame time pattern. It is actually also butter smooth when the frame time (green line) is constantly higher (as high as the max. amplitude of this saw tooth pattern).

VR, MT, RTX 4090, i7 8700, 32GB RAM, 32 GB page file, Reverb G2, Win10, DLAA (no DLSS), no mods, no trackIR, no tacview, no overclocking.

Edit: this was with the default "Freeflight Caucasus" mission with the F/A-18C. So single player, no AI units. But it happens also on other maps, like NTTR.

Edited June 5, 2024 by Tom Kazansky

[Leg2ion]

What are your PC power settings on? Had similar issues (albeit non-VR) which was fixed when I upped my power plan to either high or ultimate. Balanced or power saver didn't cut it. When I monitored my FPS in the balanced mode it would be stable then every 6 seconds or so would spike (downwards) causing a stutter. Long shot but might assist.

So right click and select display settings, left hand choices select power and sleep. Select additional power settings, then high performance or ultimate from the choices given.

 

[slughead]

On 4/2/2024 at 2:29 AM, Gryzor said:

I have some "periodical" stutters that appears and disappears like your video. However, its not so noticeable, it is very faint, but makes some hicups during flight (quest 3, 7800x3d, 4090, ssd 990pro, 64 gb...). Appears and disappears with no visible cause... I think its the software.

Are you using Oculus Link or VD or something else? If Oculus Link, if you have changed the sharpening setting in the ODT to quality this can cause stuttering. Change it back to normal.

[Tom Kazansky]

1 hour ago, Leg2ion said:

What are your PC power settings on? Had similar issues (albeit non-VR) which was fixed when I upped my power plan to either high or ultimate. Balanced or power saver didn't cut it. When I monitored my FPS in the balanced mode it would be stable then every 6 seconds or so would spike (downwards) causing a stutter. Long shot but might assist.

So right click and select display settings, left hand choices select power and sleep. Select additional power settings, then high performance or ultimate from the choices given.

 

mine are on high performance, I have no "ultimate".

edit: wait, since my Windows and me are German, I have "Höchstleistung" which is transleted to "Maximum power". Ist this ultimate?

Edited April 13, 2024 by Tom Kazansky

[SWAR1]

2 hours ago, slughead said:

Are you using Oculus Link or VD or something else? If Oculus Link, if you have changed the sharpening setting in the ODT to quality this can cause stuttering. Change it back to normal.

I am using a pimax crystal.

 

3 hours ago, Leg2ion said:

What are your PC power settings on? Had similar issues (albeit non-VR) which was fixed when I upped my power plan to either high or ultimate. Balanced or power saver didn't cut it. When I monitored my FPS in the balanced mode it would be stable then every 6 seconds or so would spike (downwards) causing a stutter. Long shot but might assist.

So right click and select display settings, left hand choices select power and sleep. Select additional power settings, then high performance or ultimate from the choices given.

 

I have my settings on bitsum.

[slughead]

2 hours ago, SWAR1 said:

 

5 hours ago, slughead said:

Are you using Oculus Link or VD or something else? If Oculus Link, if you have changed the sharpening setting in the ODT to quality this can cause stuttering. Change it back to normal.

I am using a pimax crystal.

 

I was replying to gryzor.

Edited April 13, 2024 by slughead

[Leg2ion]

2 hours ago, Tom Kazansky said:

mine are on high performance, I have no "ultimate".

edit: wait, since my Windows and me are German, I have "Höchstleistung" which is transleted to "Maximum power". Ist this ultimate?

 

Unfortunately I didn't see any difference between high to ultimate, just moving from balanced/power saving to either of them fixed my issues. Like I said - long shot but worth a go - can but try it and see if it helps. Another 'trick' may be to exclude DCS from any antivirus you are running.

[beacon]

i have this issue to like poster said in the beginning all smooth then suddenly i got the spikes

[Nightstalker]

I don't play in VR but it seems from the last or maybe last two patches my buttery smooth gameplay has gone to constant micro-stutters.  I had a hamstring injury and didn't sit at the computer for the last few months but now that I've returned and purchased the F4e, I'm now noticing this weird stutter when I look to the left or right out of the canopy.  It doesn't just happen in the F4 and it happens on other maps like the Sinai.  It's very subtle but you see it happen every 3-5 seconds.  I have very good frame rate but the spikes keep happening which causes the stutter.  As I said, I was offline for a while but it happened over the last couple of updates.  I've tried everything to get rid of it.  I've never had micro stutter at all since multi-thread was implemented.  I've already excluded DCS from my antivirus along with my TrackIR.  I've tried DLSS, MSAA, TAA, TLAA.  I've cleaned out all of the shaders numerous times and even did a DCS repair.  Nothing is changing the stutter.

I9 13900k, 32g DDR5, RTX 4080.  

[darkman222]

You have a pretty similar PC as me. Try the following. Download process lasso. And disable hyperthreading as shown in this image:

Restart DCS and see if DCS CPU affinity gets these CPUs tagged like that:

 

For unkown reasons you can not achieve this by disabling the efficiency cores and hyperthreading in BIOS. Also starting DCS with the "affinity" argument does not work.

Let me know if that helps. If you want to know more about what I found and tested already about the micro stutters look in my thread about it here.

 

Like I said. If you tried it ( process lasso is free) please let me know.

[beacon]

On 6/5/2024 at 12:58 AM, darkman222 said:

You have a pretty similar PC as me. Try the following. Download process lasso. And disable hyperthreading as shown in this image:

Restart DCS and see if DCS CPU affinity gets these CPUs tagged like that:

 

For unkown reasons you can not achieve this by disabling the efficiency cores and hyperthreading in BIOS. Also starting DCS with the "affinity" argument does not work.

Let me know if that helps. If you want to know more about what I found and tested already about the micro stutters look in my thread about it here.

 

Like I said. If you tried it ( process lasso is free) please let me know.

i was told process lasso does not work on w11

[darkman222]

Why shouldnt it work on W11? Works great. You can use the trial version and see if it helps. From my further investigations it seems to help on most of the intel users with stutters. Not sure about AMD.

[RuskyV]

If you wanted to set or select cpu cores you can do so by adding this command to the end of the target shortcut. 

 - -affinity=FF (the double dash at the front of the command has no spaces and is gapped for illustration, minus key twice)

Where FF is the core count (8 cores for FF) in Hex, you can work out what code you need by visiting here and selecting all the cores you want to try,

https://bitsum.com/tools/cpu-affinity-calculator/

This is an alternative to downloading additional software if it helps.

 

Edited July 1, 2024 by RuskyV