Mouse Input Inspector
A diagnostic drag test for mouse input settings. The scene records pointer-lock movement deltas during controlled slow and fast passes, then flags acceleration, smoothing, polling hitches, coalescing, and vertical leak.
Raw delta audit
The page inspects movementX and movementY timing, interval spikes, segment distance ratios, and cross-axis leakage.
Settings sanity check
Use it after changing Windows pointer settings, polling rate, mouse software smoothing, browser behavior, or in-game raw input options.