I'm having the same issue on all interface pages. It is virtually unusable from the lag.
Note: This is for a base that has 2 records only. I split up my basic interface into several other pages as well, so there's only a few grid views on each page. However, they still lag so that you basically can't drag and drop anything. It is near impossible to use.
I contacted the support team, and they walked me through a few things. 1. I've noticed significant improvements to my interface after contacting the support team (I changed nothing), and 2. There are some easy wins to make this less likely to happen (e.g., less grids), but my impression from the support team is that these fixes would be temporary, not long-term solutions, and they are committed to doing the needed work on the back-end to resolve this issue in the long-run.