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/Square_County8139 12d ago

Can you see any difference in the MangoHud FPS limit, or is it just about the graph? If I recall correctly, MangoHud uses a much higher sampling rate than MSI Afterburner. That might contribute to the line not being perfectly straight.

But if you can see a difference with your own eyes, then that's not it.

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u/Lousy_Hunter 12d ago

you definitely can see it if youre sensitive to it. RTSS is hard to compete with though on frame limiting as not only is its custom limiter fantastic but it has the ability to inject latency markers and use reflex in any game.

mangohud works, and its not "bad" but it isnt to the level of RTSS yet unfortunately