Trying to determine cause of slowdowns

[Return of Ganon]

Recently set up Dolphin on a machine with the following specs (different from the ones in my signature):

CPU: Intel i5-4460 @ 3.2 GHz
GPU: AMD Radeon HD 6670
RAM: 10 GB
OS: Win 10 x64
Build: 5.0 stable

The GPU is definitely the weakest link in this build, but from what I've read about it, it should probably be able to run most games at full speed without issue around 3x native. However, I'm experiencing surprising slowdowns:

Wii Sports: 40-45 fps at 1x native
Brawl: only able to get 60 fps at 1x native with one player
Mario Galaxy 1: 45-55 fps at 2x native (dips to 30-40 fps in some areas)

The results seem to be about the same with both OpenGL and D3D11 (the video card doesn't support D3D12).

Any idea what could be causing these slowdowns?

[Craftyawesome]

Try https://forums.dolphin-emu.org/Thread-unofficial-laptop-performance-guide

[Helios]

Try the latest development build and D3D11 or vulkan. Don't use opengl on AMD GPUs. It's slow

[Return of Ganon]

Thanks for the help. After double checking the settings in config, I found that dual core had been disabled for some reason. Re-enabling it seems to have resolved the issues.