Click-to-Photon on Linux: X11 vs Wayland, VRR, and DXVK low-latency
Input lag on Linux isn’t one number; it’s a pipeline from click → CPU/GPU work → compositor/scanout → pixel response. This post explains a click-to-photon way to measure end-to-end latency across X11 vs Wayland, VRR, and DXVK low-latency (enabled via PROTON_DXVK_LOWLATENCY=1).