Fairly new laptop having issues running single core

[Sandbucket]

Hey there!

I recently tried to play mario tennis (gamecube) through netplay and found out I couldn't run it on dual core. Not doing so however seems to cause some pretty heavy lag and I can't quite figure out whether I should blame the hardware or whether tinkering with settings will get me any better results.

current hardware:

Intel® Core™ i7-6700HQ CPU @ 2.60Ghz, 2.60Ghz
8GB RAM (DDR3)
Windows 10(x64)
Nvidia GTX 960M graphics card

running:

Dolphin 5.0 (most recent build)

I looked at the task manager which shows fairly heavy load on the CPU but not at all above 80% (at best a 90% peak at the start). I've tried adjusting most settings but since unselecting the dual-core setting seems to cause it I can really only assume that's the cause.

I should also mention that there's nothing significant running in the background also taking up the CPU.

[JMC47]

you should be able to run it on single core, my i5-2670QM can run Mario Tennis on single core... perhaps you have some performance throttling going on by your laptop, and the game is lightweight enough to run under it in dualcore, but not single core.

[Sandbucket]

you should be able to run it on single core, my i5-2670QM can run Mario Tennis on single core... perhaps you have some performance throttling going on by your laptop, and the game is lightweight enough to run under it in dualcore, but not single core.

Are there any settings I can look into to improve performance?