On both my work (Team Premium) and personal accounts (Max 20x), Fable 5.1 hit the 5-hour limit before it could finish the first task I gave it. On my work account, it took about 30 minutes, and on my personal account, less than an hour.

This has never happened to me before, but if this is normal behavior, Fable 5.1 is essentially unusable.

How did you hit the 5-hour limit if it took one hour?

Same experience on 5x.