The issue is people always announcing their intentions for some reason. Like in this instance someone found a nice R34 and shared it with this community, rather than just saying thank you someone had to make a point about it being encrypted. If you don't like encrypted stuff just delete it from your game, it's pretty easy to do that, but no they had to announce it.
Also with that particular R34, I don't see any issues. It's got an accurate 3D model courtesy of GT Sport, well-made and well-researched physics which is considered accurate, good shader values, and proper skins with ext configs made to match them to real-world references. I mean what else do you want, it's a driving simulator and it checks all the boxes in this regard.