It's decent.
If you aren't willing to pay you get something that is a lot more pixelated but still works well enough.
Sex scenes isn't the right term for this game, kink scenes is more accurate... also you barely get to participate in anal sex at all, and the scene you do doesn't include your love interest. The kinks are specifically dirty (piss included I managed to avoid or skip any scat if there is any), smell, micro, merge, object transformation and slavery. None of which is really my thing.
Lastly the puzzles are hit or miss, some things are intuitive... and some solutions are actively discouraged (you are told to not touch the cursed roots but you need to cut one off to give to someone, I had to bumble around for an hour hour for that one!) and there is no hint system. I couldn't take bumbling though things any longer and just used a guide for the last chapter of the game.