By static assignment, each tunnel has an ETX value of 0.1.
By static assignment, each microwave link has an ETX value of 1 or higher of LQ/NLQ<100%.

Tunnels will win the ETX race 99.99% of the time.

Latency can cause video glitches or audio drop-outs.
Let's take a look at latency on the network.
Here is an example traceroute test between
nc8q-services and wa8apb-services:

With the tunnel enabled between nc8q and (w8go and wx8a)
root@NC8Q-SERVICES:~# traceroute wa8apb-services
traceroute to wa8apb-services (10.104.249.244), 30 hops max, 38 byte packets
 1  dtdlink.NC8Q-hAP.local.mesh (10.218.93.193)  0.266 ms  0.224 ms  0.157 ms
 2  mid1.w8go-Hub-hAP (172.31.187.169)  13.620 ms  16.492 ms  14.020 ms         <- this path thought a hop to Clinton County then to Huber Heights is best
 3  mid1.W8BI-DARA-Services (172.31.114.241)  23.931 ms  28.659 ms  25.986 ms
 4  dtdlink.KE8MVM-DARA-TO-XWARN.local.mesh (10.91.93.77)  42.054 ms  24.208 ms  22.870 ms
 5  KE8MVM-XWARN-To-DARA.local.mesh (10.74.117.225)  24.205 ms  23.605 ms  23.369 ms
 6  dtdlink.WA8APB-LHG-At-XeniaNorth-to-APB.local.mesh (10.74.61.92)  32.224 ms  24.093 ms  33.534 ms
 7  WA8APB-LHG-To-XeniaNorth.local.mesh (10.85.6.187)  36.136 ms  29.008 ms  25.973 ms
 8  WA8APB-Services.local.mesh (10.104.249.244)  26.898 ms  32.901 ms  28.151 ms <- average latency

Let's drop the tunnel; nc8q to w8go:
root@NC8Q-SERVICES:~# traceroute wa8apb-services
traceroute to wa8apb-services (10.104.249.244), 30 hops max, 38 byte packets
 1  dtdlink.NC8Q-hAP.local.mesh (10.218.93.193)  0.700 ms  0.158 ms  0.156 ms
 2  mid1.WX8A-QTH-hAP (172.31.187.165)  42.323 ms  24.866 ms  22.401 ms <- this path picked up the WX8A tunnel. Clinton<>Clinton<>Huber Heights
 3  mid4.w8go-Hub-hAP (172.31.114.226)  40.410 ms  34.164 ms  32.631 ms
 4  mid1.W8BI-DARA-Services (172.31.114.241)  41.129 ms  55.015 ms  41.616 ms
 5  dtdlink.KE8MVM-DARA-TO-XWARN.local.mesh (10.91.93.77)  41.819 ms  43.693 ms  40.805 ms
 6  KE8MVM-XWARN-To-DARA.local.mesh (10.74.117.225)  48.688 ms  44.074 ms  44.434 ms
 7  dtdlink.WA8APB-LHG-At-XeniaNorth-to-APB.local.mesh (10.74.61.92)  42.077 ms  42.370 ms  58.287 ms
 8  WA8APB-LHG-To-XeniaNorth.local.mesh (10.85.6.187)  53.594 ms  50.565 ms  45.683 ms
 9  WA8APB-Services.local.mesh (10.104.249.244)  47.334 ms  50.463 ms  51.410 ms <- average latency

Let's drop both tunnels; w8go and wx8a:
root@NC8Q-SERVICES:~# traceroute wa8apb-services
traceroute to wa8apb-services (10.104.249.244), 30 hops max, 38 byte packets
 1  dtdlink.NC8Q-Kettering-Centerville.local.mesh (10.132.89.57)  0.305 ms  0.378 ms  0.335 ms
 2  NC8Q-Centerville-Kettering.local.mesh (10.110.156.47)  1.744 ms  1.635 ms  1.550 ms
 3  dtdlink.KE8MVM-LHG-MVHS-XeniaNorth.local.mesh (10.253.119.123)  1.792 ms  9.628 ms  1.884 ms
 4  KE8MVM-LHG-XeniaNorth-MVHS.local.mesh (10.252.120.191)  3.251 ms  3.202 ms  3.014 ms
 5  dtdlink.WA8APB-LHG-At-XeniaNorth-to-APB.local.mesh (10.74.61.92)  3.442 ms  3.438 ms  3.321 ms
 6  WA8APB-LHG-To-XeniaNorth.local.mesh (10.85.6.187)  5.675 ms  4.690 ms  5.069 ms
 7  WA8APB-Services.local.mesh (10.104.249.244)  5.021 ms  4.939 ms  5.022 ms <- average latency with no tunnels
root@NC8Q-SERVICES:~#

What services do you wish to access on the local network?

73, Chuck