Deleting "default.mb.gz" fixed the issue for me actually even with having Rumble on. Thankyou!

Actually Rumble is enabled, will that cause problems? I've never seen drops when playing Super Mario Bros Advance 4 while having Rumble on?

Hi there, I'm having a strange issue running Drill Dozer through GBI-SR. The game has frequent stutters while playing any of the levels that don't appear when using the default Gameboy Player Disc or running the game on a GBA SP. I've tried changing a few settings in GBI-SR like what region and what...