AMD Catalyst Switchable Graphics Not Working for UE4 Editor

I have a notebook with switchable graphics and I cannot get Unreal Engine 4 to utilize my AMD Radeon 7970m graphics card. I’m currently using the AMD Catalyst 14.4 driver. In my switchable graphics options I have every executable in binaries/win64 folder set to use my dedicated graphics card, but when I launch UE4 it still uses my integrated Intel graphics card. I can switch to the 7970m for the UE4 launcher (which is pointless for obvious reasons), but not for the editor itself. For now I cannot begin using UE4, since I get 5 fps at best. Does anybody know if there is an executable I’m missing that I need to add to the graphics switching rules?

Solved it! I found this seemingly unrelated thread here. Specifically, I followed solution #1, pasted below for convenience.

SOLUTION #1:

The fix will be in a future version of the launcher, but for now, you can edit Consolevariable.ini to change the console settings that may be the cause of the issue.

1. Go to: C:\Program Files\Unreal Engine\4.1\Engine\Config

2. Put this into Consolevariable.ini:

r.GraphicsAdapter = -2

After entering “r.GraphicsAdapter = -2” into the end of the ConsoleVariables.ini file my 7970m has kicked in and UE4 is running wonderfully. I hope his helps someone.

Hi hdelattre,

I’m glad you found the solution, and thanks for re-posting it. We also have a QFE (quick-fix) available for users on Win8.

Current Available Quick-Fix Solutions - Announcements - Epic Developer Community Forums

Cheers