Just an update to this, I found that the OculusTrayTool (its on the official oculus forums) can force supersampling profiles to 200% (2.0 setting) and will work for SLR. Google it and you will find it. The newest TrayTool version as of writing this is 0.83.1.
Things are looking really nice now.
I set it to 300% supersampling (2.5 setting) and with a 1080Ti and it looked amazing but I dropped to 45 FPS and ASW started kicking in.
I highly recommend grabbing the tool for Oculus Rift users. Note that you will need a GTX 1070+ to crank the forced supersampling, it will kill you frames with a weak card.