I have a 2xRT-AC86U AiMesh with a wireless backhaul. I recently installed another 2xRT-AC86U AiMesh at another location. After upgrading to 32797, we discovered that speed tests on several wireless PC clients at the node yielded irregular results. Some results were nearly normal, but then the throughput would jump around and fall off... sometimes it would not complete (socket error). This is after repeating the test multiple times in succession.
I spent today re-configuring my system more than once. I re-installed with plenty of resets, initialization, and power cycles. I swapped router and node. I installed a temporary wired backhaul. And I speed tested with a wired PC from both router and node. Performance was normal at the router for all clients. Performance was normal at the node for wired clients with wired and wireless backhauls. The problem affects only wireless clients at the node regardless of backhaul type. Three 86Us were tested at two locations (same ISP, different cable modems) and all three as nodes exhibited the issue.
So, I downgraded to the previous release 21140 and now the speed tests for a wireless client at the node are normal. I think the release notes indicate that 32797 is a significant change, and I think something was been broken... I will hold at 21140.
Update 9/15/2018: This AiMesh defect remains in firmware 3.0.0.4.384_32799.
OE