Micro Stutter in FSR mode

[swoozi]

Your system information

• Steam client version: 16593690000
• SteamOS version: STEAM OS 3.3
• Opted into Steam client beta?: NO
• Opted into SteamOS beta?: NO
• Have you checked for updates in Settings > System?: YES

I was reported by someone that there is still stuttering weirdly enough only in FSR, it is a very weird case but nonetheless it needs to be reported and fix. I reported a while back that the steam deck has had stutter, it's been fixed but not in FSR.

https://youtu.be/GubU9in5wCM

[Sceenshots By Rüdiger]

Steps for reproducing this issue:

1. Launch a game
2. Go into windowed mode and choose a lower resolution
3. Turn on FSR and spin the camera around

[BillCipher-exe]

yeah i have that exect problem. I get random stutters when using FSR and 40hz. This dont happen when i switch to linear scaling.

[LiamDawe]

I can confirm this as well. While the recent fix worked for normal rendering, as soon as you turn on FSR the stuttering returns.

Clear example: https://www.youtube.com/watch?v=nFi79kxWcSE&feature=youtu.be

[christofin]

Can confirm, this is very easy to reproduce. Here's a quick 1 minute video showing the different upscaling methods - only FSR has the stutter.

https://youtu.be/9e3TTux4f30

[BillCipher-exe]

Stuttering is still present with the SteamOS 3.3.1 Beta

[BillCipher-exe]

SteamOS 3.3.2 Beta seems to have fixed FSR Stuttering with 60Hz but in 40hz mode there are still frame pacing and stuttering issues with FSR enabled

[SuperGuerreiro]

Still having this issue with 40Hz in SteamOS 3.3.2. The stutter seems to get worse the lower the FPS.

Don't know if it helps, but I noticed this while playing the FF7 Remake, which runs on Unreal Engine 4. Leaving it here in the possibility of it being engine related.

[rehans]

I am having the same issue with Resident Evil 2 (Remaster) and RE 7. But I can get rid of it by enabling "Manual GPU Clock Control" (Performance Menu) and set the slider to 1600. Afterwards the stutter seems to be gone in both games.

(Steam OS 3.3.2)

[christofin]

Still an issue in SteamOS 3.4. Here are a few videos demonstrating this:

Pentiment - running in a 4K / 60hz container, internally rendered at 1080p: https://youtu.be/lEtYiSl1XS4

Rogue Legacy 2 - running in a 1440p/120hz container, internally rendered at 720p: https://youtu.be/y1IhnhucVUg

Forgive the terrible phone recording quality but I didn't want to use any capture software on the Deck that could interfere with the framepacing.

Notice how in both videos, GPU and CPU usage are very low, and framepacing is perfect with Linear/Nearest/Integer scaling, but as soon as FSR is selected, the framepacing becomes wildly inconsistent.

This behavior is consistent regardless of FSR sharpening level, happens across reboots, across different refresh rate & resolution combinations, and happens in every game I've tested. The stutter seems to be slightly less prominent when manually setting the GPU clock, but is still present until switching to another upscaling method.

This is on the stable branch, SteamOS 3.4.

[adolfotregosa]

It is still a issue to this day especially with VRR. It is so obvious when fsr is chosen that vrr stops working and micro stutters are introduced.

[Mushoz]

Still an issue in SteamOS 3.5.7 unfortunately. Also impacts the new NIS scaler, so it doesn't seem isolated to just FSR. Nearest and Linear don't show the same stutters.