Horrible Frame-rate, no idea why?

When I installed my new GPU (R7 240 DDR3 (went from DDR3 256 MB HD3650. Everything was working perfectly, was able to play Saints Row 3(60+FPS), Lumber Island - That Special Place(50+ FPS), Minecraft (maxed out… 60+FPS).

But now (I believe I updated the drivers), it just slowed down. I can't even play Saints Row 3 at a constant 30+ FPS on a smaller resolution. All settings on Minecraft, regardless of resolution/settings, lags. Low settings I get 30 fps, ultra settings I get 30 fps.

The R7 only needs 30 watts, and my HD3650 needed even more than that. So it's not my power supply…

Should I uninstall the R7 240 drivers? Would that mess up the GPU? Or would it function like normal?

It won't be the drivers, there's no way you should be getting good frame rates on that DISPLAY card - it's not a gaming card. It costs less than a new ******* game ffs.