but that's cause i like to write at 480 bpm on my computer

but i seem to be confused about something, so if the bpm was set to 190 lets say, then it would be actually playing at 95 bpm,

Use MIDI Sync. Your Game Boy will play at whatever BPM the master clock will say, even if it is underclocked.

also you can have 16 steps in the groove page, so if you wanted the kicks to be a bit longer, you'd put your groove setting like this (assuming you're using a generic ragga beat (if you wanted to this for some reason)

4
3
3
3
3
3
4
3
3
3
3
3
4
3
3
3

ok so i just underclocked my first gamebwoy

Your soundbwoy massive?

Yes, you're right. When underclocking, everything runs at 50% speed (unless you underclock more than that. ) which includes tables and sweeps as well. Sweeps, as well pitch bends (P and L commands) are of course not continuous, but consist of small changes at a certain interval. On an underclocked gamebwoy massive boom boom boom, the time between each update is doubled. I recommend you to sync two boys and use the normal speed one as master. Use the underclocked one only for things that it is needed for, like bass-heavy stuff. Conserve CPU cycles. Avoid kits, use sweep on pu1 instead of the P command when you can. etc. If you're careful not to overload the CPU it will probably work fine.