@PBGBBB2020 

Hi,

When I was troubleshooting this issue last year, I replaced 3 EAP245's, same results with all three. So it's definitely not a faulty hardware issue. It could be a firmware issue but I was running 2.20 at that time last summer. 

Now I have upgraded them all to the latest firmware 3.5. I havent got a chance to retest performance since then but once I do, I ll post my results.

@nbali 

I am curious to see what you find.

The EAP225 has three firmwares available. 2.07, 2.20 and 5.0.  My EAP225 came loaded with 2.07. Speeds were terrible. After posting on this forum, I found setting the channel to 80mhz for 5ghz resolved the issue. Shortly after that, I upgraded to 5.0. Speeds were fine for a bit but then dropped off again. I assumed it was the 80mhz didn't actually solve my issue as I had thought. But now, it looks like it may have been the firmware. Im about 4 hours post rollback and speeds are great, geting 60-75% of link speed 30ft away through a floor and two walls. 

the good news; high speeds persist throughout the whole day.

The bad news: I decided to switch over from my old surface pro running the Omada controller to a raspberry pi I finished installing the SDN on. Speeds dropped back to exactly what it was doing before. I switched back to my surface SDN and still had the same slow speeds. I upgrade the firmware back to 5.0 and my iperf had some quick fast and lots of slow trial, resulting in a very slow average overall. I then rolled back to 2.20 and everything is working well again. I dont get this at all...

@PBGBBB2020 

SDN shouldn't make any impact.... 

@Egis 

I know, right? It makes no sense. My guess is it has to do with the AP resetting/rebooting when being forgotten/adopted by the SDN???

Its bizzare. 

original sdn: iperf was 200-300 mbps

switched to new sdn: iperf was 50-100 mbps

switched back to old sdn: iperf was 50-100mbps

Results above are 30 ft from ap through a floor and a wall.

now I upgrade firmware back to 5.0: standing right infront of the AP I get some spurts of 300 mbps but most results of the 30 trial test are 50-75mbps.

I roll back to 2.20 and iperf3 average 500mbps and is consistent for all 30 trials 

I cant figure this one out.

@PBGBBB2020 What command are you running in iperf client for the speedtest? And is the iperf server wired to the network? 

@rjow2021 

iperf3.exe –c 192.168.x.x –w 2m –t 30s –i 1s    

@PBGBBB2020 Bit of a long shot,

When your getting slow speeds, turn the WiFi off then on, on your smartphone. See if the speed issue resolves itself. 

I have 2 EAP245's and the EAP225 Outdoor, all controlled with the OC200. And if I get slow speeds from my smartphone I cycle the WiFi off/on to resolve the speed issue. When its working properly I get between 500-750Mbits/sec depending on clients connected to EAP, with the same command in iperf.

I know its my phone because the same thing happened with my previous non TP-Link WiFi set up. But this is a known issue with Samsung devices.

@rjow2021 but that doesn't fix the actual issue. 
 

when I had the issue it affected all 20+ devices connected to it. Not just 1. 
 

the issue was never resolved completely.  Ended up switching to different APs to fix the issue 

@HPad 

Yeah, I really thought I had sorted it out when I downgraded the firmware. Unfortunately its horrible again. It was doign well until I released the EAP225 and adopted it with a new SDN I set up Friday night. After that, It when slow again and has never come back. Standing right next to it, I get about 120mbps on iperf3; but during the 30 trials to get that result, I range from 10mbps to 250mbps, so its really inconsistent. Since then, I connected it back to the original SDN I was running and I have upgraded and rolledback the firmware; but nothing resolved the issue. Still slow and inconsistent.

My guess is its a hardware issue that sometimes triggers after a reboot. I have tested every variable to no avail. Slow speeds persist even without security on and even if I am the only client connected. Tech support is sending me a replacement but I am more inclined to just return this and get some unifi equipment. I've wasted too much time trying to sort this out.