Hi guys, the internet speed with Flint AX1800 is terrible, and it's everywhere including LAN and WIFI, to be precise I'm using 100 mbits cable connection, while connected the WAN interface shows 100 mbit full duplex which is correct, but testing the speed on a desktop or wifi drops below 10 mbits which is terrible, and I've noticed here that other people have reported similar issues with the connection speed as well, having 1 gbit connection their speed were decreased to 100-150 mbits and in my case it's 10-15 mbits sometimes, so it seems like some kind of a bug or settings misconfiguration when your bandwidth gets cut X10 times or so and unfortunately no clear solution.
Just to confirm, for the test I took other two routers Zyxel and Asus of similar types and both of them produce 95+ mbit speed using the same setup, so there's nothing wrong with the cables or internet itself, the issue clearly lies within the router firmware settings.
I tried to rollback to previous versions down to 4.5.0 and also tried beta version 4.8.0 but nothing helps, which is frustrating..
Other issue I noticed here is with the time sync, I had it too, for some reason setting up a local time doesn't sync the time, but while downgrading different firmware versions I was able to achieve a successful syncing with the firmware version 4.5.0 and then upgraded to 4.6.8 by keeping the settings and now the time is well synced, so it's another issue with the further firmware updates. And something in the settings must be causing the internet speed to drop so significantly.
I tried to set an offload as a workaround but it didn't work
uci set firewall.@defaults[0].flow_offloading='1'
uci set firewall.@defaults[0].flow_offloading_hw='0'
uci commit firewall
/etc/init.d/firewall restart
got this back:
root@GL-AX1800:~# iptables -t nat -A POSTROUTING -o eth0 -j FLOWOFFLOAD
iptables v1.8.7 (legacy): Couldn't load target FLOWOFFLOAD':No such file or directory
requires unavailable target extension FLOWOFFLOAD, disabling
For now I'm using this router as a switch in AP mode, all my devices are connected to Flint router including ethernet and wifi and the speed is 100 mbit so there's nothing wrong with the hardware but only the firmware/firewall settings issue.
Did anyone come up with any ideas how to fix this?
Thank you for pointing out, I successfully installed it on USB flash drive because there wasn't enough space in / dir, anyways the internet speed was at its maximum now! So everything seems to be ok with the connection this way, but how do I apply it now? Is it some weird firewall rules?
The speedtest works fine using this tutorial, no problems at all, but after I do a speedtest normally the internet speed drops to 5-10 mbits all the time. I have tried resetting the router and installed previous version of firmware down to 4.5.0 and nothing helps.. It must be something with the NAT/Firewall rules. As I mentioned this router works fine in AP network mode, the issue is only when using it as a full router.
Logged in to admin panel, navigated to System and chose Reset Firmware
Unplugged Ethernet cable leaving only patch cord to PC at LAN2
Logged in to Admin Panel again and navigated to System/Upgrade and chose Local Upgrade (tar files)
Uploaded 4.1.0 firmware and downgraded from the current 4.6.8 firmware version to 4.1.0
Logged in to admin panel, connected Ethernet cable to WAN port and headed to OpenSpeedTest, boom! The download/upload speed now were at its maximum!
Unplugged Ethernet cable again and uploaded next firmware 4.2.0 and kept the settings during the installation.
After it's completed, logged in to admin panel, plugged in Ethernet cable and tested the speed, still everything works..
Repeated steps 7 and 8 with each next firmware version, technically speaking - upgraded each version 1 by 1 all the way to the latest stable version 4.6.8 and everything works flawlessly.
So the issue occurred during the upgrade from the older version to the newest version, for example the upgrade from 4.5.0 to 4.6.8 didn't resolve the issue either.
I upgraded it initially via admin panel when the notification appeared that version 4.6.8 was available and it seems this gap when jumping from an older firmware version to the latest causes some weird NAT/Firewall misconfigurations.
Maybe this workaround will help someone else too, because I couldn't find any tutorials about the upgrade process like this to properly restore router's functionality.
Hello, this is not the point, even after setting the time manually it still didn't work and the error message about time sync remained always visible in the settings, but this issue is not present in firmware versions between 4.1.0 up to 4.5.0 there were no problems selecting the time manually, I didn't add/change anything via terminal, which means something has changed in later firmware versions that causes this issue with the time.
P.S.
The time is well set right now, I just kept the settings during an upgrade from 4.5.0 firmware version.