Looking for a little advice to try to understand how to get some better performance from a hAP AC connecting via CAPSMAN to a hEX (RB750GR2)
I thought i'd do a little advance planning pre the arrival of FTTH at home. I've been running three .11n APs (RB951G-2HnD) using capsman to date but never needed more than my 50/10 broadband allowed. Given the new install will be able to get to gigabit (or even 10) i thought some better wifi was in order.
Currently I have one home SSID and one guest SSID so capsman makes it simple to keep them apart, change configs, update all at once etc. I'd like to stay with CAPSMAN if possible.
However, and this seems like a common problem, getting good performance out of the hAP seems to be a challenge.
I have read all i can find. 5Ghz spectrum here is not at all crowded. On my phone i can only pick up one other AP and it is at -89dbm
As it is currently configured, I get an 866 PHY up and down... sitting about 2-3m from the AP. Signal is good at -45dBm
However, when i run iperf to my gigabit connected desktop I am getting a max of about 140Mbit down to the test device and often less (pixel 3a phone - 2S AC).I discovered if i reverse the test direction I have got up to 180Mbit (not consistently) . I note that many people mention the CPU on the hAP as a bottleneck but when i looked during the iperf test it was <50% loaded (And the hEX perhaps 20%).. so it doesn't seem like CPU should yet be an issue yet. I'm not using local forwarding. I tried both with and without a bridge configured on the hAP with no discernible impact.
Testing windows file transfers gives me a little lower performance.
Channel selection is auto 80Mhz and using xxxx or ceee makes no difference (I had read somewhere that xxxx could impact performance presumably if the control channel is badly located)
I'm allowing DFS channels.It takes a while to settle but works fine and seems to hold onto the channel, Other than that i have tried to change as little as possible to not complicate matters.
I'd be happy to consistently get 200Mbit or nowfbut would like to know what might be possible and how to attain it.
Everything is on 6.47.9. Country set to UK (indoor)
(side note... the hAP seemed to be unaware of its own 5Ghz antenna gain so i had to put that in manually... doesn't fill me with confidence in the code...)
Any hints or tips from those who have been through this? It does seem to be harder than it ought to be.