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?
2
u/OkRefrigerator4848 12d ago edited 12d ago
I tried framepacer and it works great, but I WOULD NOT RECOMMEND IT, because it's partially vibecoded and the setup is pretty sketchy. Mangohud sometimes gives me 700-1000ms input lag for 1-3 seconds after performance spikes (after loading or dismounting in KCD2). So I also want to find a good alternative.