On the newer git versions of GZDoom needed to play wads like Blade of Agony, I'm having a strange problem. All graphics on the screen seem to shift right and left really fast when I'm strafing or mouse turning/looking. At first I thought it was a v-sync issue, but it's definitely not. Looks almost like frame stutter. It only happens on BoA. It's totally fine on Doom 1 or 2 or wads like BtSX.