I’m just opening a 14.0 project with 14.1 and I’m experiencing the same problem with the Vive. This project also ran flawlessly at 90 fps in 14.0 and now it’s dropping to 45 fps almost all the time. I have a standalone previously built with 14.0 and it still runs flawlessly at 90 fps. Cr1tlord, did you find what the problem is? I’m just upgrading to 14.3 and hoping that it will fix everything.