Do you have specific examples? Everything is instantaneous for me.
Every Zoom/Unzoom animation is lagging a lot, the problem is they added that everywhere to make it fancier:
- When you click on a result
- when you click on the arrows on the destination screen
- when you enter a destination
- when you click on another type of transport (car, public transport...)
So all those actions are lagging because of that.
It's probably because they only spent time to optimise it in Chrome but I don't care, I prefer to stop to use GMaps than to use Chrome.