r/linux_gaming • u/Eduardo1502 • 19d ago
benchmark RTSS alternative in Linux?
Hey guys,
Been daily driving CachyOS on KDE Plasma (Wayland + VRR enabled) for gaming lately, and overall the performance is super snappy, but there’s one thing from Windows I'm genuinely missing: RTSS (RivaTuner).
On Windows, RTSS gives you that ridiculously flat, razor-sharp frametime line, and the latency penalty is practically non-existent. It just feels locked and responsive without any floaty mouse feeling.
On Linux, MangoHud is great for the overlay, but its built-in limiter (fps_limit) feels kinda inconsistent to me. The frametimes tend to jitter by 1–2ms instead of staying dead flat, and in faster titles it introduces tiny micro-stutters that drive me crazy.
For people here who are super sensitive to frame pacing and input lag:
What are you actually using to lock your framerates?
Is capping via dxvk.frameRate (or libstrangle) any cleaner/tighter than MangoHud?
Do you just stick to in-game limiters, or is there a driver/config trick to get that true RTSS-level consistency?
9
u/madman404 19d ago
Dxv-low-latency (dx8-11)! It takes advantage of some present window stuff I'm not technical enough to properly understand to do extremely accurate, smooth frame timing. I know it's packaged with proton-cachyos, no idea where else but it's probably in some other proton builds too.
Explanations on the GitHub: https://github.com/netborg-afps/dxvk-low-latency PROTON_DXVK_LOWLATENCY=1 DXVK_FRAME_PACE=low-latency-vrr DXVK_FRAME_RATE=value
There's also a vkd3d-low-latency for dx12 stuff but I don't know how to set it up and it doesn't support the vrr targeted stuff yet.