No, that feels pretty smooth.I made a couple improvements and I tried a lot of different methods, but I think at this point it is what it is. At least I don't crash like Campo Santo - Firewatch often does
Not exactly sure what makes the difference.
Still though, I wish I could get Create parallax scrolling with CSS - LogRocket Blog working. It can handle the parallax flawlessy but perspective gets disabled if I use overflow:hidden to hide the content within the game banner.