Significant FPS drop after 4.1 patch

Development Platform & Builds Debugging, Optimization, & Profiling
, , , ,
10

The file should be at:

C:\Program Files\Unreal Engine\4.1\Engine\Config\ConsoleVariables.ini

You should place the line in a new blank line after the last line in the file. Some thing like this:

;r.ShaderDevelopmentMode=1  

r.GraphicsAdapter = -2

Be sure to restart the editor.