I see one node has fallen to 97.08 onAP1 right now. Last time I had checked I have not seen any other issues with audits only canceled. I did not see errors like file does not exist or something.
So for me it is apparent that it has impact on the score. It would be much better taking into account the many circumstance why storage can be slow at times maybe to put a node in suspension. That way if you for example run a raid rebuild that takes 3 weeks you can recover after that again. The current 15 secs seems to be a terrible idea.