The flickering of the video may be caused by the following reasons

1. Resurfacing occurs in the model

Flicker caused by multi-surfaces mostly occurs only on special materials, and the flicker is mostly triangular in shape.

2. Flicker caused by small structures

When the camera is moving slowly, it is more difficult for DLSS algorithm to deal with this kind of structure because the model structure is fine. It is recommended to turn off DLSS when output video or use normal map to simulate the bump of the model surface.