If you're using the default graphical settings (1x IR, no AA) then your bottleneck should be the CPU. Your GPU should be able to handle 1x IR with no AA, but your CPU is holding you back.
Two suggestions
1) Don't use 4.0.2. It's really slooooow compared to the latest development revisions. Checkout the first builds you see here -> http://dolphin-emu.org/download
2) Checkout this guide -> https://forums.dolphin-emu.org/Thread-unofficial-laptop-performance-guide
Two suggestions
1) Don't use 4.0.2. It's really slooooow compared to the latest development revisions. Checkout the first builds you see here -> http://dolphin-emu.org/download
2) Checkout this guide -> https://forums.dolphin-emu.org/Thread-unofficial-laptop-performance-guide