I have two Celeron 1.5ghz systems running 2.9.41 with SR5 cards shooting 3 miles. I have a -58 signal on each side. I am running with Nstreme and polling enabled. The issue is the low CCQ and dropping pings with slow response times.
If I reboot both sides at the same time, the CCQ numbers bounce all over from 70% to 90%, and I drop about 4% of my pings across the link.
If I reboot only one side, then the CCQ numbers are 100/100 on both sides, and everything is happy. (0% dropped pings)
I have another identical setup going 28 miles (with -65 signals) that does exactly the same thing running 2.9.38.
It would seem there is a bug in the MT wireless code?