Does anyone here know whether/how this should affect WebGL rendering?

I'm developing a browser-based 3D game, and since a week or two ago I've noticed the rendering on mac/chrome is way slower than before. In fact my game now seems to be GPU-bound, where up to now it's always been CPU-bound. I think this started right around Chrome 94 shipped, but it's hard to downgrade and check. This is only on mac; PC performance doesn't seem to have changed.

TFA makes it sound like whatever is new in v94 is only about page rendering, not WebGL, but does anyone know for sure?