Well, to be fair, only handful of people use it for VR 
Also, you don’t have to avoid dynamic lighting, just plan ahead and get clever with optimizing layouts. Lastly, dungeons generated offline can have baked lighting and I am 99.9% positive that generating them real-time will not make your game better. There are other ways to make pre-cooked dungeon feel like it’s random. I am personally going this route - many pre-cooked dungeons. If people really want more out of the game, either tech by then will be more optimized and handle lighting well, or I can simply generate more dungeons and offer them for free for as DLC.