I used to get a rock steady 60fps at 4k Ultra with an RTX 2060 GPU. I can’t pinpoint the day it changed, but possibly after an update a week or so ago the frame rate has halved…
I have changed nothing on my system. I now get a rock steady 30fps with the very odd spike to 60fps right at the end or beginning of a ride…
Would really appreciate any advice on getting back to 60fps… I have turned on triple buffering, but this wasn’t required in the past to achieve 60fps… I haven’t tested properly but I did see it get into the 40’s once I turned this on.
Very interesting! Good call, it may have coincided with video screenshots becoming available on Win 11!! I’ll have to test that out. Not ideal if that is the case though and why would it do that?
The video capture feature is cpu based and on a low power mobile processor you could be hitting the max power limt (TDP) of the cpu. Make sure the CPU is set to max power not the GPU as zwift is nearly always cpu limited before GPU.
Looks like both cooling systems are separate in that box so max on both should be ok. Basically watch the cpu frequency and load with capture on and off and see if it drops / hits 100%.
Also make sure triple buffering is enabled in the nvidia control panel to stop any 1/2 fps drops if using vsync.
Until zwift switches to GPU encoding like most other apps for capture it might be best to leave that feature off if FPS tanks (with triple buffering enabled).
Cheers Steve,
Without triple buffering on it dropped to 30fps from 60fps. With it on I think it runs around 40fps.
For the time being I think I’ll just live without the video recording… Which is a shame given my system isn’t terrible…
Interestingly, it looks like my log from yesterday shows the fps actually jumps up when the video clips are being saved, I’ll have to double check but I’m pretty sure the spikes shown below are when it saved the clips…
One final thing you could try, change the nvidia Threaded optimization setting from Auto to OFF then test. Then try ON and test again (both with Video Capture set on).
Normally zwift works best with it set ON on a modern multicore system.which AUTO tends to do but it can get it wrong.
I too have the identical HW. FWIW I did not experience frame rate drops with the new feature but rather, periodic stutters and blackouts (presumably during saves) – though I have a freesync monitor. As per other posters driver settings make a difference.
