RM750 is more than adequate quality.
With afterburner, if it turns out that dolphin isn't running while your GPU is running 3d clocks, there is a way you can just completely turn off the difference between idle, 2d, and 3d clocks, called "AMD unofficial overclocking", followed by "without powerplay support" in the following menu-thingy. Once those are enabled, you just change the clock rate of either your core or VRAM. Doesn't even have to be an increase. Hell, you can even pull off driver glitches like I did, wherein I used afterburner to change my "stock" clocks to 900/1300 (50/100 above stock), and then I "underclock" the core to stock, and it disables powerplay without needing to play about in the registry. That does, however, require exploiting a beta driver bug, and the execution of the exploit can cause permanent damage to your GPU if not done correctly, so I'm not even going to speak more of it now.
Of course, you don't need to disable PowerPlay if bad clocks aren't the issue.
With afterburner, if it turns out that dolphin isn't running while your GPU is running 3d clocks, there is a way you can just completely turn off the difference between idle, 2d, and 3d clocks, called "AMD unofficial overclocking", followed by "without powerplay support" in the following menu-thingy. Once those are enabled, you just change the clock rate of either your core or VRAM. Doesn't even have to be an increase. Hell, you can even pull off driver glitches like I did, wherein I used afterburner to change my "stock" clocks to 900/1300 (50/100 above stock), and then I "underclock" the core to stock, and it disables powerplay without needing to play about in the registry. That does, however, require exploiting a beta driver bug, and the execution of the exploit can cause permanent damage to your GPU if not done correctly, so I'm not even going to speak more of it now.
Of course, you don't need to disable PowerPlay if bad clocks aren't the issue.
in a perfect world we would all be piles of sand with no ability to form coherent bodies of body