Dolphin suddenly slow with all games

[dolphbaby22]

Help! I used to run Dolphin 5 at a perfect 60 fps for all my games up until a month ago. So I took a break from the emulator and when I got back today its running insanely slow for seemingly no reason. I tested No More Heroes and Mario Galaxy and both games vary between 15-35 fps depending on onscreen activity. Both of these games used to run at silky smooth 60 fps on my pc:


Specs - Core i7-2600 at 3.4 Ghz, AMD Radeon r9 280x 3gb, 8gb Ram, Windows 10 x64

So when I opened Task Manager it seems Dolphin isn't using more than 10-15 percent of my CPU no matter what. Shouldn't it be higher? GPU usage is about 40 percent. Also, I've just now discovered that the internal resolution and anti aliasing settings has no effect on the games. It always runs at native resolution no matter what I set, from what I can see. I don't know if this is related.

Things I've tried:

Enabling/disabling dual core setting.
Rebooting PC.
Reinstalling dolphin.
Enabling Disabling various speed hacks.
Changing power settings to high performance mode.
Testing other PC games(all run smoothly).
Running dolphin in adminstrator mode.
changing backends. Similar performance across open gl and directx.

So now I'm at a complete loss. Please help me!