Quick answer: Unity HDRP DLSS upscaler flickering for several frames after a Cinemachine camera cut? DLSS reconstructs from history that's now invalid - reset DLSS history on camera teleport.
Cutscene cuts to a different camera. First few frames show ghosting trails of the previous view.
Reset history
HDRenderPipeline.RequestSkipFrameAccumulation();Tells DLSS the history is invalid. Next frame starts fresh.
Hook into Cinemachine cut event
OnCameraCut from Cinemachine fires on instant transitions. Call the reset there.
Or use a fade
If you can afford a 1-frame fade through black, the artifact is invisible. Cheaper than the reset call on some pipelines.
“Upscaler history is a tool. Resets are the price of cuts.”
Every camera transition strategy interacts with temporal upscalers. Test cuts with DLSS/FSR/XeSS each on; ghosting is the visible bug.