Is there anything I can improve to run ANY GC emulator without major bugs? Like, graphics card? In my country it ain't that easy to buy a decent card. Who knows when it will be...
Current Gamecube emulation working with current hardware is insufficient to emulate most games at full speed (or even close). As hardware gets faster and Gamecube emulators continue to be developed, the situation may change, but for now that's it.