Just wanted to know if someone of you noticed the same problem.
Edit: This problem is temperature related. I put a large fan in front for the Flint 2 and the WiFi speed is instantly restored to normal. My room temperature is 26C.
My environment
FW 4.5.8
5 GHz WiFi AX (also happens on AC)
160 MHz
Channel 116 / 52
Wireguard VPN client active
Fiber connection
No WiFi encryption
Steps to reproduce
Several speedtests during the day, high client volume (public WiFi)
Expected behaviour
Stable WiFi download speed
Actual behaviour
WiFi speed drops on 5GHz from 800 Mbit to around 50 - 100Mbit (download) constantly after a router running time of just 17 hours.
The ping during a speedtest is over 2000ms (according to the speedtest.net app), including packet loss.
Tested with an AX210 adapter and Pixel 7 via the speedtest.net App and iperf3 between my laptop and the router.
Link speed according to Windows is high (864Mbit).
This happened so far on channel 116 and 52.
The wired speed is always at full speed (850/450).
The problem also persists when standing directly in front of the router.
I had 4.5.8 running for several months without any issues. I wonder if its maybe temperature related or caused by a malfunctioning client. I never really used a OpenWRT 23/snapshot based image, because it always produced similar WiFi problems.
Is the speed drop also occurring on other devices when ax210 is not in use? (Hence the difference and it is on MTK SDK).
I run currently OpenWrt 24 without the gl software but i noticed this intel chip is a nightmare to the MT6000 i thought it was isolated to only playing gta online udp peer to peer traffic or like the multicast issue on github, but even for the most basic functions like updating windows it crashed the full wireless driver every 10 seconds .
its litterly the only device of my 10-20 devices which manages to do that, i wonder if this chip handles wifi differently or something which aren't compatibele with mt7986 maybe some propertairy counter part by intel?
Edit: also it is important to say i use a multi psk environment, but i'd still think AX210 may does something interesting in which the mt7986 doesn't handle that gracefully, same with WED intel might have their own propertairy different tech.
I just tried to connect to the guest WiFi once with version 4.6.3-24. It is displayed but there is absolutely no chance of connecting to it even if it is set to open
80 MHz did not help very long. Now download and upload is reduced to 25Mbit/64Mbit. Also the link speed is much lower
I can connect to another device in the same room with the full AX speed.
Its really frustrating, that even the MTK drivers cause so much trouble. I guess I will be switching back to my old Flint 1 again. Looks like this was my first and last time buying a Mediatek based router. They also set their github repository to private. https://git01.mediatek.com/ which means open source is no option for them anymore.
Driver default (Country DE) for MTK and the OpenWRT version from the openwrt website.
I also tested it with the latest OpenWRT snapshot and OpenWRT 23.05.4.
With the snapshot I had only one single WiFi device connected tand the speed slowed down after around 1 hr. After putting a fan in front of the device after 5 minutes I was able to get the full speed again, also stable this time.
The same for OpenWRT 23.05.4 after having multiple clients connected, but this time it started slowing down after just 20min.
I believe that this is a hardware problem, probably because of insufficient cooling of the device.
I would have to open the device in order to check the temperature of all components. Isn't this voiding the warranty?
It doesn't need to be a chip which is overheating. It could also be an amplifier, capacitor, resistor or any other electrical component, which could be
defective and therefore react differently to heat.
All I can observe is: Without a fan the WiFi performance is reduced after some time to 50-150Mbit.
I'm now using the same firmware and config file with my second Flint 2 to rule out if its a hardware problem.
.
, im out of ideas too.
