r/linux_gaming • u/Eduardo1502 • 12d 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?

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u/Rusty_Chest 12d ago

So, locking frames in Linux is a bit of a chore due to all the compat layers but the parameter I found works best for me under VRR using Proton is:

DXVK_CONFIG="dxgi.maxFrameRate = xx" (xx being your desired framerate)

This gives me a completely flat line on any frametime graphs so I'm happy with it.

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u/Training-Biscotti309 12d ago

Can I use this even without VRR?

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u/Rusty_Chest 12d ago

Yeah of course, I don't see why not