Everyone knows that PCVR on quest 2 is absolutely unusably bad. It's like looking at a really badly compressed 640x480 jpg and the framerate is fucking awful, sure the panel is updating at 90hz or 120hz or whatever but the IMAGE is going to be like fucking 23fps at best. 

The tracking is basically worthless, your controllers lose tracking if they're below your chest or level with your shoulders and the headset itself can barely orient itself in a room thanks to the worthless inside-out tracking system. 

There is ONE system that is worth buying and it is the Valve Index.