Pmp450m + pmp450b modulation drops (CBRS)

3.65 pmp450m is the AP. 450b is the CPE. New deployment with only 4 customers on so far. Trying to figure out this modulation drop and sometimes the customer falls completely and has to re-establish link.

Identical modulation drops on another CPE on the same AP, at the same time. Is this likely
LTE CBRS interference? There is another operator using LTE 3.65 in the same coverage area, but I don’t see much in the way of spectrum analyzer.