Wireless PTP bridge stops working after ~30 minutes after a firmware upgrade until we reboot

We’ve had a wireless PTP bridge working for years running on firmware v3.10. A security analyst told us we needed to upgrade the firmware due to a vulnerability in the SSH protocol and so we performed a simple firmware upgrade to v6.44.5. Now we can’t seem to keep the wireless bridge on for more than ~30 minutes. We can temporarily fix it by rebooting the AP end (rather than the station end).

What can we do here?

Thanks.

Getting this in the log:

wlan1: radar detected on 5320000

Probably DFS. Select a non DFS channel. https://m.youtube.com/watch?v=ZbrbRUAfpac

Thanks, got me on the right track. I opted to just enable superchannel mode and it seems to have solved my issue.