Hi, question, what are your PCARS graphics setting?
I asked because I have get a project cars VR Crash/Hang on any setting other than 1 (even 1.1), I have been running with everything on ultra settings at 4k (3480x2160) on screen and left those settings in place when switching to my HTC Vive, those settings work fine until I change the "ResScale" data=“1” from 1 to anything higher. My hardware config below:
CPU: Intel Core i5-6600K
RAM: G.SKILL Ripjaws V Series 32GB DDR4 3200
SSD: 2 x PNY CS1311 2.5" 480GB SATA III
GPU: ZOTAC GeForce GTX 1080 AMP! Edition