Hello!
I didn't encounter the price bug anymore, so kudos for that.
As for the upgrade point R&D, you really nerved it down! It looks about one thousand times slower than before. It's a bit bothersome for the wrist to have to chain R&D, and "Creative Burst" each time to reactivate the burst but I guess there was no other way.
Now for the endgame stuff. If you have a lot, like 80-100 kitchens and Big Reach, or maybe more, and 400-500 staff, the screen refresh becomes very sluggish. Is there a way to refresh only visible kitchens, or change the display? It could be displaying only one "In Reach" kitchen and its count, and display the out of reach kitchens (I keep one for r&d stuff).