Sonic Adventure 1 is infamous for its lighting/textures successively degrading after each port from Dreamcast -> GameCube -> PC. There's a famous video showcasing all the changes: https://www.youtube.com/watch?v=SORYL5J1Heg

The only version of SA1 I played as a kid was the Gamecube DX version. I was shocked to find out that the original version looks and plays a lot better (and has far fewer bugs)