Saw it today.
Decently average I would say, much better than Detective Pikachu.
It starts really fun and ends with a lot of promisses but the core movie is just not Sonic.
It's not Sonic the Movie, it's Sonic in a Movie.
This was faded to happen since the reveal, I hope the next will have Sega and Sonic fans involvement from the beginning and be much better.
I'm actually interested on it, it looks like they know what they should do now.