There are a bunch of technical bottlenecks coming in with more data in the spreadsheet. The one that hits first is the communication between Google Sheet and Glide. For a variety of reasons it’s hard to make this work well much beyond 25k rows. Having said that, depending on how much data you have in each row, you might have luck with going up to 100k rows. We don’t currently limit Pro apps to 25k row, so you can just give it a try.