Could you explain what you did.Resolved
Add policy nat
This also happens with it off.I also share the opinion that adaptive noise immunity could be causing nv2 lockups, therefore I recommend to turn it off and check if it resolves random wireless lockups.
I decreases 5db in tx power and continued the same problem.turn down your power till you get to about -60 or so. I think you will find the radios are more stable when they are not driving max output.