Yes, thankfully there is. You can reduce the transparency in the Accessibility settings.
I’d wish that the computation load / battery drain would also be reduced by reducing the transparency. However, I think that the computation will still take place.
Ooof that's not great. I had a Macbook 12 that really needed reduced transparency + motion to run well...
I guess the M-series chips are up to the task, but still seems like unnecessary computation I can't turn off :(
It was mentioned in one of their WWDC videos. IIRC “Reduce Transparency” now would affect the amount of blur. It was similar to the amount of blur in VisionOS.
But this was a few days ago and I can’t remember exactly which video it was mentioned in.
I'd probably do that after the first day of using it.