Don’t worry about the absolute value of the test average precision - it is hard to compare between datasets (see elsewhere on the forum or the topaz github for an explanation of why). You just want to see it increasing, then plateauing. I would pay more attention to whether the output picks look sensible
EDIT: E.g. see here: Understanding topaz output - #2 by rposert
and here: Topaz Train: low value of test average-precision over epochs - #2 by alexjamesnoble