Press the little Arrow next to Play and select “Standalone Game”
While the game is loading Minimize the UE4 editor
Once the game has loaded in it’s window press Alt+Enter
Game then plays perfectly in my Oculus Rift in full screen! I’ve no need to turn on stereo mode or anything like that in the console (tested with CoachKnights and a user made VR template found in these forums)
The most important steps for reaching 75FPS are 3 & 5!"
Keep in mind that playing within the editor with significantly decrease performance. You can right click on your .uproject file, launch game from there, and test what real world performance will deliver.
In addition to that, in your post process volume, there is a drop down under Misc for AA. Check that, and select none. I’ve actually found that setting smooth frame at 120fps for max, min, and min will deliver the best performance.