I've had the same 'not looking materially different' experience with a 3D application that is not a game, that I asked Fable 5.2 to improve.

It looks like no breakthrough over Opus 5.5 and I'm somewhat disappointed.

During my use this evening, 25% of the Fable limit on the $200 plan was consumed. I'd estimate it at 3x faster consumption than Opus 5.5.