The impressions on my gig have been fairly stable for two months. Had three mutual cancellations in one day.
Impressions on my gig are now half of what they were. The fall was pretty much instant.
Don’t believe what customer support says about mutual cancellations not impacting you.
Note: late delivery cancellations don’t seem to impact me. Even with late delivery cancellations my gig has never seen the fall of impressions that it had.