How much RAM/VRAM do you really need?

I’d like to know if buying more, and faster ram would be of benefit to me.

I have a high-end PC, with an i9 10850k, a 3090, and 32GB of 3200Mhz ram.

I fly in VR exclusively, currently using a Quest 2, but I’ve got a Vive Pro 2 coming next week.

I have wondered if upgrading to 64 GB 3600 Mhz ram would be worthwhile. Would it allow me to do things like up my Terrain and Object LOD’s to 200 in VR, increase the number of shadows, and set buildings and reflections to ultra rather than high?