Ally X: FPS Limit Behavior with VRR enabled?

[PhantumJak]

Describe the bug

Three things really...

1. When VRR is enabled, the FPS does not lock to the specified value. For example, if "60" is chosen, is will hover in the low to mid 60's, like 62 to 65.

2. When VRR is enabled, I expected that I would be allowed to set FPS limits granularly instead of perfect divisions of the refresh rate. For example, if VRR is enabled, we should be allowed to set the FPS limit to, say, 48, on a 120Hz display.

3. When VRR is enabled, I would get awful frame pacing issues unless I disabled FPS limit. Even setting the FPS limit to the max refresh rate did not fix this issue, I had to disabled FPS limits entirely. THIS ONLY HAPPENS SOMETIMES

What did you expect to happen?

1. I expected the FPS to go no-higher than the specified value, but it was constantly between 2 to 4 FPS higher (fluctuating)

2. When VRR support is enabled, I expected I could set granular FPS limits and let the VRR do its magic from there.

3. When VRR and FPS limits are enabled at the same time, I was not expecting consistently bad frame timing.

Output of rpm-ostree status

No response

Hardware

ROG Ally X, VRAM set to 8GB

Extra information or context

I doubt the game matters, but I was testing this on Spyro Reignited Trilogy and Baldur's Gate 3

[austonpramodh]

I think 2nd point is a Steam issue, Need to check with an external VRR-enabled device on Steam Deck if it allows granularity.

[thienntm]

Same as me with black myth wukong.
Did you find workaround?

[KyleGospo]

I think 2nd point is a Steam issue, Need to check with an external VRR-enabled device on Steam Deck if it allows granularity.

In SteamOS main branch, VRR was broken until around 48 hours ago, and now exhibits this behavior.

We're watching gamescope closely and will add fixes as they occur. For now if you want frame limiting turn off VRR or use another method like Mangohud via launch option.

[dosubot]

Hi, @PhantumJak. I'm Dosu, and I'm helping the bazzite team manage their backlog. I'm marking this issue as stale.

Issue Summary:

• You reported FPS limit issues on the ROG Ally X with VRR enabled, causing frame pacing problems.
• Austonpramodh suggested it might be a Steam issue and recommended testing with an external VRR device.
• KyleGospo noted a recent VRR fix in SteamOS and suggested turning off VRR or using Mangohud for frame limiting.
• Thienntm also reported similar issues with another game and asked for a workaround.

Next Steps:

• Please let me know if this issue is still relevant to the latest version of the bazzite repository by commenting here.
• If there is no further activity, this issue will be automatically closed in 14 days.

Thank you for your understanding and contribution!

[RodrigoPrestes]

Not ROG Ally, I'm using a desktop PC hooked on a Samsung TV via HDMI, but I have the same problem when VRR is enabled.
I'd say this issue is still relevant.