I'm not even talking about varying heights of cells, just resizing the window. It. jumps. and. jerks. and. crawls. and. chugs. Even if it's a fresh blank sheet. And the problem gets noticeably and rapidly worse the bigger the window is, so if I want to fullscreen a sheet on a big monitor...oof. It's like the application completely reconstructs the whole visual canvas from scratch any time you do anything, whether it makes sense or not.

This doesn't happen with any other application.

Hiding the ribbon makes a _huge_ difference. That's hilarious and awful.