Super but sudden onset of keyboard lag is a deal breaker – Google Docs: Sync, Edit, Share Review

Started a collaborative document with another user today and was really pleased -- truly the perfect tool in that regard. I had set the doc 'in question to be accessible offline... but once no longer connected, keyboard lag at approx 1+ sec between characters typed made it unusable. Got home and back online and same problem. Even rebooted iPad Pro and no fix. Opened google drive -and seems ok for a minute and then not again. Doc is 5 pages, all text in tables and one co-author. Really a pity...
Review by Djacouma on Google Docs: Sync, Edit, Share.