I’m finding myself hitting a rough patch. Over about 5k hands I’ve gone from +700BB to -350BB.
What’s the biggest swing you’ve had so far in online poker? How many hands did it take you to recover? How much was your bank roll?

A 10BI downswing is very common in cash games. 20BI will happen from time to time. 30BI is a sign, you are probably no more than a break even or very marginally winning player. I have had a 30BI downswing, but some of that were from Zoom games, which I was probably not beating. It stopped, when I gave up Zoom and focused my full attention of full ring regular tables. I lost half my bankroll, and it took a few month to recover it.