ArcMaxCollect - I would increase it only if there's a need to run some "big" queries from data amount point of view. But this should be done only to meet some query execution goal and needs to be set back to lowest/default value back. Lets say if there's need to get all archived data tag values for last several years.
Archive_MaxQueryExecutionSec: Again, increasing it will cause the system to wait on "long running queries", like calc ones.
I would reset these values to default in case if there are constant PI SRV performance issues caused by large\heave queries from some user(s)/scripts, juts to get the performance back for the all of the other users and find/analyze that queries as the next immediate step.
And here's the result of Queue files on D:\ drive and PI system stop/start