/vr/ - Retro Games

Is it common to get slowdown from using bezels? I tried those Fire Emblem RGB30 bezels, and all of a sudden, my game got all choppy. It's weird because the FPS counter still read "60fps", but it FELT like 40 FPS. So then I tried other bezels, and some of them lagged (the default ones), while others didn't (the ones made by TechDweeb). So then I tried switching from the lcdgrid shader to the dot shader, and NOW, I can use the bezels lag-free. It's a little brighter than I'm used to, but I can deal with it. It's just weird, because
>custom bezel = no lag
>custom bezel + lcdgrid shader = lag
>TechDweeb bezel + lcdgrid shader = no lag
>custom bezel + near-identical-looking shader = no lag
??? Is it because of too much detail? Like the Fire Emblem bezel had too many colors so it lagged, while the Techdweeb bezel was just a black plastic texture, so it didn't lag?