TheMontyB
Posts: 7
Joined: Sat Feb 27, 2021 10:23 am
PC Specification: 3700X, RTX 2080 FE, 32GB RAM, W10 2009

Black Ops Cold War restricted FPS when using Timeshift

Sat Feb 27, 2021 10:33 am

Hi,
I've noticed that if I upgrade my Nvidia drivers above 457.51 and attempt to use Timeshift on BOCW, my fps drops from a smooth 140fps down to around 40-55.

Timshift on = https://i.imgur.com/ugNokaG.jpg
Timeshift off, Action still hooked in = https://i.imgur.com/uNI79dh.jpg

No other changes have happened, this has gone on for a few months now. Unrelated to game updates or Action updates. Purely tied to going above 457 to the 460 drivers.

I'm using Windows 10 2009 (latest updates), Action 4.15.1. Happens across all video quality settings and with HW Acceleration on or off. No change in GPU clocks when timeshift is on.

It is also specific to BOCW and doesn't affect other games, e.g. Witcher 3.

I unfortunately have no idea why this is happening as there doesn't seem to be any impact on system resources when this bug happens.

Thanks.

Piotr
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Re: Black Ops Cold War restricted FPS when using Timeshift

Fri Mar 05, 2021 7:06 am

It may be problem with drivers. What framerate you get using time-shift on older drivers?
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TheMontyB
Posts: 7
Joined: Sat Feb 27, 2021 10:23 am
PC Specification: 3700X, RTX 2080 FE, 32GB RAM, W10 2009

Re: Black Ops Cold War restricted FPS when using Timeshift

Fri Mar 05, 2021 9:17 am

Thanks for replying - FPS is the same as the timeshift disabled FPS on the second image.

457 gives me about 138fps capped w/ timeshift on.

460+ gives me 138fps capped w/ timeshift off, then the 45-55fps w/ timeshift on.

I've done the usual DDU to trash everything driver related, fresh reinstalls and even a new Windows install for an unrelated thing. Doesn't seem to happen on any other game I've tried.

Also happened when I briefly borrowed a 3080, so I don't believe it's tied to my GPU.

Thanks.

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Watchman
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Re: Black Ops Cold War restricted FPS when using Timeshift

Sun Mar 07, 2021 2:42 am

Nvidia driver madness as usual. Once they work next time a regress. When running very high framerate we had to make some changes that increase frame drop. We can achieve much smaller frame drop but this will cause video stuttering in final recording. From many many tests the current solution seems to give best results.

TheMontyB
Posts: 7
Joined: Sat Feb 27, 2021 10:23 am
PC Specification: 3700X, RTX 2080 FE, 32GB RAM, W10 2009

Re: Black Ops Cold War restricted FPS when using Timeshift

Sun Mar 07, 2021 8:57 pm

That's fair, I fully expected it to be Nvidia/driver related.

I did some more messing around and realised it's not tied to Black Ops Cold War but DX12 games.

Division 1 drops from a smooth ~120 to a stuttery ~80, Dirt 5 drops from ~120-130 to ~40-60.

I have seen that OBS is meant to have a similar stuttering issue with DX12 but I couldn't replicate that on my system.

I'll just stick to 457 for now and until Nvidia adds something worth updating for.

Thanks.

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Watchman
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Re: Black Ops Cold War restricted FPS when using Timeshift

Sun Mar 07, 2021 9:41 pm

We have some unofficial drivers (beta). We will check them. DX12 should work flawless :( The drop is huge and unacceptable.
Can you post the exact driver number (462.xx) the shows this problem?

BTW1. Any chance to test with VSYNC enabled? Or are you running 120Hz display?
BTW2. We will check Dirt 5 on RTX 2080 tomorrow (with newest drivers)

TheMontyB
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Joined: Sat Feb 27, 2021 10:23 am
PC Specification: 3700X, RTX 2080 FE, 32GB RAM, W10 2009

Re: Black Ops Cold War restricted FPS when using Timeshift

Sun Mar 07, 2021 11:38 pm

Watchman wrote:
Sun Mar 07, 2021 9:41 pm
We have some unofficial drivers (beta). We will check them. DX12 should work flawless :( The drop is huge and unacceptable.
Can you post the exact driver number (462.xx) the shows this problem?

BTW1. Any chance to test with VSYNC enabled? Or are you running 120Hz display?
BTW2. We will check Dirt 5 on RTX 2080 tomorrow (with newest drivers)
Thanks for following up on this!

I was going to do a nice big write up but I think I've found the cause - Hardware accelerated GPU Scheduling (HAGS).

I reinstalled the Nvidia driver fresh again - 460.71 - and it was smooth and had no issues. I rebooted and the issues came back, which prompted me to think about HAGS. Turned it off, rebooted and now I'm not getting the performance issues when using timeshift...

BOCW, Dirt and Division all have 1-3fps drops when timeshift is on which is what I expect. Everything is smooth now...

Just in case - I'm using freesync (well, GSync compatible) with forced VSync, plus low latency on and 142fps cap. 144hz monitor.

I'm not sure why this hasn't affected me before or why it's fine on 457.xx drivers. I might be jumping to conclusions but I can't replicate my issue with HAGS off... I'll see if it still behaves tomorrow.

Thanks.

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Watchman
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Re: Black Ops Cold War restricted FPS when using Timeshift

Mon Mar 08, 2021 3:45 pm

Wow, thank you so much for checking HAGS. We are adding this to the update check list!!!

TheMontyB
Posts: 7
Joined: Sat Feb 27, 2021 10:23 am
PC Specification: 3700X, RTX 2080 FE, 32GB RAM, W10 2009

Re: Black Ops Cold War restricted FPS when using Timeshift

Fri Mar 12, 2021 4:02 pm

Now it's been a few days, I can safely say it does seem to be related to the toggle for HAGS - I haven't had the issue with it off. Weird.

Thanks.

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Watchman
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Re: Black Ops Cold War restricted FPS when using Timeshift

Mon Mar 15, 2021 5:21 pm

Thank you! HAGS is now on the pre-release check list.

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