>>391115878
I like Koikatsu mostly because I've already got a shitload of OC cards, custom scenes I made for use in VR and can load MMD dances onto my own characters. The other Illusion games are pretty much the same, I just prefer the anime art style.
Fallen Doll and similar unmoddable animation viewers are good for one or two faps but that's all, barely worth the download unless you're desperate.
The Japs have a few like the above but for niche fetishes or with some added interactions, おなごたっちVR is worth a try if you want to headpat a girl and slap her butt.
VaM is the best when it comes to mixing porn and interacting the models but making anything yourself is a lot of work so be prepared to trawl through other people's garbage tastes. Lots of paywalled mods/scenes and the art style often has an uncanny feel for me.
Skyrim sex animations are already clunky on flat, in VR it's arguably worse but the appeal is more in the context of the sex than the quality of the models or animations. Getting a blowjob as a quest reward is hotter than just randomly loading a blowjob animation. It does lose some appeal if game mode and coom mode are mutually exclusive for you. The same rules for modding also apply to sex mods, don't go overboard adding stuff you download without testing your core mods first.