Cancelled audits

Yes, it should. But we also want to reduce the tail before start, as you may see in this thread:

I do not think it would be disqualified in that case, if it’s functioning normally, there are also retries for the same piece after reducing a load (the node is temporary placed in the containment mode to allow it to respond). However, it may be the case if the hardware have issues.

Yes, because it was a great indicator for that time. Seems not anymore. At the moment you may ignore that the node cannot read a file for more than a minute to allow it continue to work instead of crash, but seems now it’s greatly increases risk of disqualification (because the check wouldn’t fast enough).
Anyway I still did not get a confirmation from the team, does canceled audits are accounted against the audit score or not.
From the logic it should, but then I would expect to have more than 3 attempts to audit the same piece.