Channel padding notice

I have a middle only relay… which is showing up these notices in the log every 90mins or so. I do not get these on my other relay which is a guard.

12:09:46 [NOTICE] Channel padding timeout scheduled 219670ms in the past.
12:09:46 [NOTICE] Channel padding timeout scheduled 232088ms in the past.
12:09:46 [NOTICE] Channel padding timeout scheduled 243266ms in the past.
12:09:46 [NOTICE] Channel padding timeout scheduled 233232ms in the past.

10:48:48 [NOTICE] Channel padding timeout scheduled 282990ms in the past.
10:48:48 [NOTICE] Channel padding timeout scheduled 232091ms in the past.
10:48:48 [NOTICE] Channel padding timeout scheduled 170683ms in the past.

I am running an NTP server to keep the time in sync.

Any ideas what could be causing this?