Forum Discussion
UE 4.5.1 / SDK 0.4.3 direct to rift and hmd mirror off
With direct to rift mode do not use: hmd mirror off With "hmd mirror off" direct to rift mode does not work correctly, 0 FPS. With mirroring the direct to rift mode works very good here, 75 FPS, 1...
Ok did a few more quick tests and managed to get Direct mode working both with Aero on and off, and both with mirroring on and off, not sure what is different from before though..
What i think might be happening in my case is that the overall performance is only slightly worse than in 0.4.2, BUT they seem to have implemented a new method which forces half the refresh rate if you don't reach full 75 fps; i assume they've done this in order to avoid crazy judder and to play nicely with vsync, which kind of makes sense.
Problem is if you were just about hitting 75 fps before (0.4.2), then the small hit in performance of 0.4.3 in combination with this new "snap fps" method means you are now constantly jumping from 75 to 33 fps, which makes the experience really terrible. Still, need to do some more testing. :geek:
On the plus side, when everything is working the lower latency is really awesome, you can really feel it! :o
What i think might be happening in my case is that the overall performance is only slightly worse than in 0.4.2, BUT they seem to have implemented a new method which forces half the refresh rate if you don't reach full 75 fps; i assume they've done this in order to avoid crazy judder and to play nicely with vsync, which kind of makes sense.
Problem is if you were just about hitting 75 fps before (0.4.2), then the small hit in performance of 0.4.3 in combination with this new "snap fps" method means you are now constantly jumping from 75 to 33 fps, which makes the experience really terrible. Still, need to do some more testing. :geek:
On the plus side, when everything is working the lower latency is really awesome, you can really feel it! :o