Hello,
so i never had this problem before. So i was editing my video, in preview everything is fine, music is matching beat, everything is just perfect, so then i decided to render my video and after it done rendering i noticed that i lost all my sync, flickers are not matching the beat, transitions are not matching to and etc... So i tried to google this problem and no one was able to fix it, i have no clue where is the problem.
So my clips originally are ~29fps, in my settings i use 59,940fps and rendering 59,940fps so fps settings are matching rendering settings. So you will say change everything to 29fps. I tried to make it everything to 29fps it was the same.
Btw my music is modified i changed pitch to -3 to make it sound slower. This is how it looks.
Now i'm trying to render my video to.avi but i dont think that it gonna change something.