Glitches in Premiere Rush

Hi, each time I am editing on premiere rush, I keep having glitches in the middle of my work. Those are still present when I export. And even when I replace the glitching part with the original video (non edited and without glitch) then new glitches will appears somewhere else on the video... it makes it impossible to work with rush if I have to recheck and replace each frame at some point because glitches appears. I am wasting time on this and I don't know why it keeps happening. Am I doing something wrong in the settings or other parameters ? Thanks  

(here's an example of the glitch)