mt7615: slow AC wireless speed on Linksys EA8100-AH

openwrt / mt76

mac80211 driver for MediaTek MT76x0e, MT76x2e, MT7603, MT7615, MT7628 and MT7688

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mt7615: slow AC wireless speed on Linksys EA8100-AH #349

Open programmingisart opened 4 years ago

programmingisart commented 4 years ago

Hi, I am trying to add support for Linksys EA8100-AH (MT7621 soc with dual MT7615N) The AC speed is about 50~150Mbps when connected to Oneplus 6, but the original firmware can do around 350Mbps (Tested on Channel 36) Thanks! Seems like this is the same issue when I try to add support for Linksys EA7500-V2 (#305 )

I noticed that in LUCI, Network -> Wireless -> Associated Stations, it is only showing

RX Rate / TX Rate 6.0 Mbit/s, 20MHz 585.1 Mbit/s, 80MHz, VHT-MCS 6, VHT-NSS 2, Short GI

it this normal?

programmingisart commented 4 years ago

I also noticed that the TX speed (from Router to device) is very good while rx speed (from device to Router) is slow

nbd168 commented 4 years ago

Please try the latest revision of OpenWrt master or 19.07. I've fixed a critical issue in hostapd.

programmingisart commented 4 years ago

Please try the latest revision of OpenWrt master or 19.07. I've fixed a critical issue in hostapd.

Thanks! but I rebuilt and tested the latest master, unfortunately the problem is still here

programmingisart commented 4 years ago

Another interesting thing to note is my phone is only reporting a Transmit link speed fluctuating between 117~468Mbps (Receive link speed is normal at 866Mbps)

adiastra commented 4 years ago

I would like to confirm the low transmission speeds on the latest release

Model MTC Wireless Router WR1201
Architecture MediaTek MT7621 ver:1 eco:3
Firmware Version OpenWrt 19.07.2 r10947-65030d81f3 / LuCI openwrt-19.07 branch git-20.155.55664-f35803e

I have a Strong brand AC1200 router (mine is actually hootoo but its identical) and even have the second CPU enabled (it comes populated but not enabled)

I still get average speeds below 250.

prabuselva commented 4 years ago

I would like to confirm low 5GHz Speed on my Xiaomi R3P pro on 19.07.3

Model Xiaomi Mi Router 3 Pro
Architecture MediaTek MT7621 ver:1 eco:3
Firmware Version OpenWrt 19.07.3 r11063-85e04e9f46 / LuCI openwrt-19.07 branch git-20.136.49537-fb2f363
Kernel Version 4.14.180

My Speed differences,

Laptop -> R3P Stock Firmware : averags around 480~510 Mpbs (maxes at 550 Mbps)
Laptop -> R3P OpenWRT 19.07.3 : averages around 240-260 Mbps (maxes at 300 Mbps)

The speed drop is very consistently stuck at around 300 Mbps..I think its something to do with mt76

Its better to rename this issue sa mt7615 Slow 5GHz AC Speed (as it is common to many routers)