Determining a visual problematic

Hum i m around this since a while, and maybe answers have already been given previously (but lost in a long thread of differents answers).
my movement of camera are still giving me headaches for a smooth move and visual result.

here is a 30Fps mainloop filtered incremental
and here a raw non filtered video (20-22fps)

is my problem a video problem (gfx setting) or is it a performance problem (not running at 60fps)?

i m using a dampered flatcamera with stride renderer window

Comment part of your system one after another until the problem isn’t visible. Then narrow down the search by uncommenting and over again.

The problem with the camera is most likely the result of something coming from somewhere else. But without any context or patches it is hard to help here.

merci Erwin.
already on search.