zeroone wrote:
Maintaining the APU at the normal speed while changing the speed of the CPU is an interesting idea. I'll give that more thought
This is what Mesen does when overclocking (if the option to preserve sound pitch is enabled).
The APU keeps running at the same speed that it usually if the CPU was not overclocked.
For $4011 writes, overclocking is automatically disabled until the $4011 writes stop, so their pitch is preserved as well.