u/Few-Efficiency279

This weird artifact/flicker on the right side of the screen only shows up in the psx core in multiple forks for me, namely the RA version and the physical disc version. Yes right now I am playing with widescreen hacks but that happens without hacks too, with and without horizontal crop, with and without hdmi sync and force progressive. What’s going on and can I fix it?

Edit: tried a couple things and not sure what exactly fixed it. Either changing v sync = 2 or gaming mode in the ini seemed to gotten rid of it