@Nate are the Omegas connected to a WiFi network?
If not and the WiFi client interface is active, it will scan for valid networks on a <10 second interval. This scanning kills the network throughput momentarily, forcing it to always be in catch-up mode.
Sounds like this might be your issue from what you've described.
To avoid this, just disable the wifi client interface:uci set wireless.sta.disabled='1' uci commit wireless wifi