Specs say max PoE out current is 450mA when supply voltage is higher than 30V.
If the camera draws 170mA when steady, then it wouldn’t surprise me if current peaks would exceed 450mA limit when turning. What do camera specs say about current draw? (But even if specs say it needs slightly less … if it creates short current peaks that might still upset RB, even more so if power adapter used isn’t in great health any more).