VR preview works, but with framerates down to 50fps from a solid 75 in worst cases, and from a solid 75 to 71-74 in the best case.
Yeah this made things worse for me, too. way more jitter. 😞 i had to put hmd pd at like .5 for it to work...down from .8.
And I am also getting lower framerates with 4.9 in VR.
Yep, I also just recently noticed getting worse performance on UE4.9+Oc0.7.0. I have some scenes that were running fine before but now I have to turn off my one single shadow casting spotlight to get 75fps, when before the upgrade it was running fine. It is a simple scene with just some static meshes and simple shaders. Sames thing happened for some other scenes I had.
But your also right, the performance did take a fairly severe hit. Three projects of varying complexity just won't hit a solid 75 in certain areas anymore, ran more than fine previously.
I'm experiencing the same problem. The same project that on 4.9 and 0.7 had a solid 75 frame rate now with 4.9.1 has judder. I have to use hmd pd of about 0.8 to get it to the same fps as before.
Sizable increase in frame time, not sure if 0.7 runtime or 4.9.1, just posting to raise awareness.
Just wanted to confirm that I've got the same issue. Went from a solid 75fps in 4.8 to horrible judder and 47 - 57fps in 4.9
We've also seen the large VR performance drop with 4.9.1. Our framerates when using the Rift went from a solid 75fps to frequently under 50fps with no other changes other than updating to 4.9.1.
Adding to the people who are experiencing serious slowdown on the UE4.9.1 + Oc0.7.0 combo.