More than 25k rows in the sheet

It may or may not work. I think you will see a slowdown, even if each relation only shows a handle of rows, because I think the phone will be caching some of the data as well and has to download it. I think the biggest slowdown is Glide having to sync up all of that data, which can take some time. I ran a simple test with up to 120,000 rows in a single relation, so that’s a bit extreme of a case. Smaller relations worked better though, so breaking up the data will help, but it did work my computer and phone pretty hard.