Extensive Data Loss every 15 minutes

What is the deal with this problem? I’ve seen lots of post but no clear description or fix for it. We have multiple PTP links, that do this, but on one, it’s like clock work that every 15 minutes the damn link drops.

05:57:17 wireless,info 00:0C:42:D8:D8:0B@wlan1: disconnected, extensive data loss 
05:57:22 wireless,info 00:0C:42:D8:D8:0B@wlan1: connected, wants WDS 
06:11:31 wireless,info 00:0C:42:D8:D8:0B@wlan1: disconnected, extensive data loss 
06:11:36 wireless,info 00:0C:42:D8:D8:0B@wlan1: connected, wants WDS 
06:25:57 wireless,info 00:0C:42:D8:D8:0B@wlan1: disconnected, extensive data loss 
06:26:02 wireless,info 00:0C:42:D8:D8:0B@wlan1: connected, wants WDS 
06:26:02 wireless,info 00:0C:42:D8:D8:0B@wlan1: disconnected, extensive data loss 
06:26:08 wireless,info 00:0C:42:D8:D8:0B@wlan1: connected, wants WDS 
06:26:08 wireless,info 00:0C:42:D8:D8:0B@wlan1: disconnected, extensive data loss 
06:26:13 wireless,info 00:0C:42:D8:D8:0B@wlan1: connected, wants WDS 
06:41:04 wireless,info 00:0C:42:D8:D8:0B@wlan1: disconnected, extensive data loss 
06:41:10 wireless,info 00:0C:42:D8:D8:0B@wlan1: connected, wants WDS 
06:41:10 wireless,info 00:0C:42:D8:D8:0B@wlan1: disconnected, extensive data loss 
06:41:15 wireless,info 00:0C:42:D8:D8:0B@wlan1: connected, wants WDS 
06:55:36 wireless,info 00:0C:42:D8:D8:0B@wlan1: disconnected, extensive data loss 
06:55:42 wireless,info 00:0C:42:D8:D8:0B@wlan1: connected, wants WDS 
07:10:11 wireless,info 00:0C:42:D8:D8:0B@wlan1: disconnected, extensive data loss 
07:10:17 wireless,info 00:0C:42:D8:D8:0B@wlan1: connected, wants WDS 
07:25:29 wireless,info 00:0C:42:D8:D8:0B@wlan1: disconnected, extensive data loss 
07:25:34 wireless,info 00:0C:42:D8:D8:0B@wlan1: connected, wants WDS 
07:40:07 wireless,info 00:0C:42:D8:D8:0B@wlan1: disconnected, extensive data loss 
07:40:12 wireless,info 00:0C:42:D8:D8:0B@wlan1: connected, wants WDS

I’ve tried every trick I could find in the forum (I think) with no success. SNR is in 50’s, CCQ is over 80%, rx levels -60 dbm. Lastest 5.11 OS installed. Why every 15 minutes does this happen?

No one? Bummer. Guess I’ll keep randomly trying different settings.

What frequency?
Any radar nearby?

No radar, 5.8 GHz, noise floor -100dbm…very aggravating actually. I disable “Periodic Calibration” and at least it’s not happening every 15 minutes.