cannot reproduce New radar functions cause a lot of stuttering in VR - latest OB

[Gryzor]

I noticed a lot of frame spikes and stuttering with radar ON, in latest OB 2.8.6.

With Radfar OFF, there is no stutters in OB 2.8.6 (like previous beta 2.8.5). MT Branch. Please ED don´t get more lower the VR performance and fix this issue, F-18 is unplayable now at specially low level flight (maybe due extra radar calculations???)

Any other had the same experience?

EDIT: Attached tracks with radar ON --> STUTTER and radar OFF --> No Stutter (no framespikes). Can you reproduce it please?

F-18 RADAR ON - STUTTERS!!!.trk F-18 RADAR OFF - NO STUTTERS!!!.trk

Edited June 9, 2023 by Gryzor

[Gryzor]

I updated my first topic with 2 tracks showing stuttering issues with radar ON --> specially at low level flight. Look timeframe graph... tracks with radar ON --> STUTTER and radar OFF --> No Stutter (no framespikes). Can you reproduce it please?

[Tholozor]

What are your hardware specs?

[Gryzor]

2 minutes ago, Tholozor said:

What are your hardware specs?

5900x, 32GB DDR4 3600Mhz, Nvidia 4090, SSD 2TB (5000 MB/S), windows 10 

[stonewall197922]

Not in vr, but same with me. Tried f18 stutters. Did not tried to switch of radar( saw this post just now). No such problem with apache. I think its new radar mode. Tried sinai and syria. More stutters were on syria.

Posted from phone.

Edited June 10, 2023 by stonewall197922

[Gryzor]

42 minutes ago, stonewall197922 said:

Not in vr, but same with me. Tried f18 stutters. Did not tried to switch of radar( saw this post just now). No such problem with apache. I think its new radar mode. Tried sinai and syria. More stutters were on syria.

Posted from phone.

 

I tested also in 2D, stutter occours. What I noticed is that if you put radar in AG mode, there is no stutters. Only in AA mode stuttering occours.

[Gryzor]

Please ED can you confirm this bug? Radar air mode FPS stuttering also affect F-16 (happens the same. If you switch off F-16 radar, there is no stutters).

[=37.Sqn= Mjugen]

New radar produce fps spikes/stutter......

HW 13900K, 4090......

[skywalker22]

1 hour ago, =37.Sqn= Mjugen said:

New radar produce fps spikes/stutter......

HW 13900K, 4090......

You should get a better hardware, that's not good enough 

[stonewall197922]

35 минут назад, skywalker22 сказал:

You should get a better hardware, that's not good enough 

Did you suggest to run dcs at pentagon grade supercomp?

[stonewall197922]

В 09.06.2023 в 18:08, Gryzor сказал:

I noticed a lot of frame spikes and stuttering with radar ON, in latest OB 2.8.6.

With Radfar OFF, there is no stutters in OB 2.8.6 (like previous beta 2.8.5). MT Branch. Please ED don´t get more lower the VR performance and fix this issue, F-18 is unplayable now at specially low level flight (maybe due extra radar calculations???)

Any other had the same experience?

EDIT: Attached tracks with radar ON --> STUTTER and radar OFF --> No Stutter (no framespikes). Can you reproduce it please?

F-18 RADAR ON - STUTTERS!!!.trk 810.15 kB · 5 загрузок F-18 RADAR OFF - NO STUTTERS!!!.trk 810.15 kB · 1 загрузка

 

Confirm, as soon as plane is off the ground stutters appears with huge fps drop. If AG mode is on no stutters, switching back to AA and stutters with fps drop appear. I`m not using ANY mods (in fact  didn`t even know how to install them). With AG mode radar or Apache everything run normal. That problem occurs just after recent patch.  Answer from support team is highly appreciated.

P.S. Trying to reinstall game from scratch. But until that, everything described above by Gryzor is true.

Edited June 11, 2023 by stonewall197922

[Gryzor]

For me its very unpleasant flying with F-18 or F-16 with those stutters caused by AA radar. Let´s hope ED fix it quickly.

[stonewall197922]

31 минуту назад, Gryzor сказал:

For me its very unpleasant flying with F-18 or F-16 with those stutters caused by AA radar. Let´s hope ED fix it quickly.

It`s basically unplayable, stutters and fps drop really huge from approximately 140 fps to 10, and that`s because of radar. Currently, reinstalled game and downloading f-18 and Syria to test.

[Gryzor]

29 minutes ago, stonewall197922 said:

It`s basically unplayable, stutters and fps drop really huge from approximately 140 fps to 10, and that`s because of radar. Currently, reinstalled game and downloading f-18 and Syria to test.

All maps are affected by stutters. Even for me, drops to 10 fps or less. Specially noticeable in Syria, Normandy and Sinai maps. VR, ST and MT.

[stonewall197922]

В 11.06.2023 в 15:52, Gryzor сказал:

For me its very unpleasant flying with F-18 or F-16 with those stutters caused by AA radar. Let´s hope ED fix it quickly.

Reinstalling game didn`t fix problem. Still huge fps drop in AA radar mode. Saved Games folder before reinstall was totally deleted.

Attached track - Syria. Unplugged all usb devices and audio interface (except one joystick). Clean install without ANY mods. In that track i switch between AG and AA radar modes. Graphic settings set to low. No problem with AG radar. FPS drops from 170 to 10, basically during maneuvers.

FPS DROP F18 Syria.trk

Edited June 12, 2023 by stonewall197922

[last1976]

Same Problem here. Something seems very off. I cannot even fly after takeoff, freezing for 10 plus seconds. When I turn of radar all is butter smooth

[Gryzor]

I don´t understand ED statement about "cannot reproduce". It is very clear to reproduce ! just compare timegraph from those tracks provided!!!

[Flappie]

On 6/12/2023 at 10:58 PM, Gryzor said:

I don´t understand ED statement about "cannot reproduce". It is very clear to reproduce ! just compare timegraph from those tracks provided!!!

I've just tried the 2 tracks in OP:

(pancake 3440x1440 - AMD 3700X - 32GB of RAM with 32 GB pagefile on SSD - 1080 Ti - I'm 100% GPU bound according to DCS)

I see one FPS drop (from 60 to 50) between T+35s and T+38s. I assume you're getting a very different result.

 

If you havent already, consider a DCS cleanup then a DCS repair in slow mode.

If that doesn't help, try renaming your "Saved Games/DCS..." folder (do NOT delete it).

Edited June 13, 2023 by Flappie

[Gryzor]

9 minutes ago, Flappie said:

I've just tried the 2 tracks in OP:

(pancake 3440x1440 - AMD 3700X - 32GB of RAM with 32 GB pagefile on SSD - 1080 Ti - I'm 100% GPU bound according to DCS)

I see one FPS drop (from 60 to 50) between T+35s and T+38s. I assume you're getting a very different result.

 

If you havent already, consider a DCS cleanup then a DCS repair in slow mode.

If that doesn't help, try renaming your "Saved Games/DCS..." folder (do NOT delete it).

 

Hi Flappie, maybe it could be related to specs. I have normally sustained 120 fps, even in missions with many units (4090 at 4K, 5900x, 32GB DDR4 3600, 2 TB SSD) so stuttering could be more noticeable in my PC (120 fps to 50 or 60 fps, or less... are quite noticeable...), in comparison with your 1080ti. I would test limiting to 60 fps by nvidia inspector, just to have a test... maybe drops from 60 fps are not so noticeable.

I don´t understand ... I reverted also to previous version (same exact PC config) and I can guarantee to you that is smooth as silk, 120 fps sustained even in syria at damascus city. In latest OB, with radar in AG mode or off (F-16, F-18) is smooth as silk also. So for sure there is something in the latest OB code that is not right.

Thanks for your testes and support. KR.

Edited June 13, 2023 by Gryzor

[Flappie]

You're welcome. If you have mods or Export.lua scripts, mind that your performance may vary from patch to patch, simply because DCS evolves continually and mods don't adapt as quickly. Renaming the "Saved Games/DCS..." folder is a quick way to eliminate the possibility of a mod or Export script causing your issues.

[LeCuvier]

I have a very modest hardware config with i 4790 processor, 16 GB of RAM and a GTX-1080 GPU with 8 GB RAM.
I tried a free flight mission over Syria flying towards Aleppo in OB MT preview. At cruising altitude (above 4000 ft) my frame rate was around 70 FPS, with or without A-A radar.
Also overflying Aleppo at 3000 ft or more, frame rate was fine, I could not see any impact from A-A radar.
But when I overflew Aleppo at around 500 ft above ground, the A-A radar had a big impact. With A-A mode Off I was around 48 fps. But with A-A ON and AIM-120 selected the framerate dropped to 11fps. I cyced several times between A-A radar ON and OFF and the pattern repeated.

Edited June 14, 2023 by LeCuvier

[lwalter]

same problem here

[last1976]

After exercising all suggestions, the Problem is still there. As long as the AA Radar is working. When I press Silent or turn it of. All is running smooth. 

Question to the devs. Is the AA Radar supposed to be such an massive impact on the system or are you considering it has to be something off if it has an noticable impact, especially in form of stuttering an freezes?

Because as the other posters, i can definetly confirm it is the AA Radar causing the Issue.

[stonewall197922]

I solved this issue by moving dcs to ssd(was previously on hdd) and setting page file to 32 gb (have already 32 gb of ram)on a separate from dcs ssd. My conclusion: after latest ob patch aa radar reads more data during mission from disk. If total bandwidth (disks are slow, not enough of ram, small pagefile or it located on a slow disk or the same disk where dcs is located) is not enough you will see fps drop.

[Swift.]

12 minutes ago, stonewall197922 said:

I solved this issue by moving dcs to ssd(was previously on hdd) and setting page file to 32 gb (have already 32 gb of ram)on a separate from dcs ssd. My conclusion: after latest ob patch aa radar reads more data during mission from disk. If total bandwidth (disks are slow, not enough of ram, small pagefile or it located on a slow disk or the same disk where dcs is located) is not enough you will see fps drop.

I'm surprised you had good performance before the update whilst running from an HDD. I had to change over to an pcie drive a while back because I was getting a half setting freeze every couple of seconds on HDD.