Set pieces barely function
Chunks of the level don't load frequently
Feels like stiff trash that you have to play carefully so you don't die to random debris or the occasional glitch in every level
Presentation is mediocre and the aesthetics is amongst the worst seen in a Sonic game to date

Been playing pretty consistently from 2017. It's a very charming and fun game, although it unfortunately doesn't have enough to keep a single island playthrough enjoyable. You'll hit the loop sooner rather than later, the game tells you it's out of new scenarios, and it becomes a bit boring. Still, I find myself enjoying it even with my current run.

I gotta say this is one of the worst experiences I've ever had with a game. Some of the levels don't even load until you stand in place for a solid 3 minutes.