Yes, that would be the only thing hindering your Dolphin performance. Upgrading the CPU on a laptop like that is nigh impossible, so you would have to buy a new one and/or build a PC (do this). On a PC, the Pentium G3258 is a great budget CPU, or the i5-4690k if you're willing to dish out a bit more cash.
Arch
Intel Core i7 - 4510U
iHD4400
8GB RAM
Check here first:
wiki.dolphin-emu.org
Intel Core i7 - 4510U
iHD4400
8GB RAM
Check here first:
wiki.dolphin-emu.org
