I'm running into a really frustrating speed issue with my Flint 2 and I’m trying to pin down why. I've already ruled out my ISP I ran a direct router-to-device LibreSpeed test and it's 100% showing that the bottleneck is happening internally. I’m struggling to even hit 400 Mbps down locally, and I'm barely even getting that most of the time.
To make matters worse, on a lot of my other devices when I run a speedtest, I’m barely getting 200 Mbps connecting to the internet as well.
I am not running any VPN software on the router or the devices, and both computers are directly connected via Ethernet, so it's not a Wi-Fi or encryption overhead issue. There is nothing else on my network pulling traffic right now, but the internal throughput is just tanking.
I really like this router and it's usually a beast, but this is a huge headache. I tried a firmware downgrade to troubleshoot, but that just killed my connection entirely, so I'm back on the latest stable build now and the problem is still there. I've checked my MTU and hardware settings, but I can't find anything that should be throttling the connection like this.
Has anyone else had this issue? Is my Router Defective?
Please check whether your PC has power-saving mode disabled and confirm that its performance is sufficient to handle high-speed network processing
Try adjusting the mode under Admin Panel → Network → Network Acceleration—disable network acceleration, or enable hardware/software acceleration to see if there’s any difference
There a few other things what can also be a issue:
if you use any usb connected to the flint 2, there alot of reports including mine having extremely degraded wifi, you can lower the usb version or not use usb at all.
some smart phones have a bug, for example I use a Poco X6 pro, but when I debug heavily between wifi access points by changing, sometimes a regression occurs where the phone is deliberly downgrading its speed until 50mb or lower it will do that over longer time, but it can half wifi speed at the start, then a full phone restart fixes it.
Do you have any packet prioritizing /QoS service enabled? Both PCs give same speed results? You are testing from one PC to another? Check in PC Ethernet connection properties that speed connection are negotiated to 1000 mbs full duplex or 1000/1000. Can you test with another cable to discard interference? For 1000 mbs should be at least cat5E.
Within my new script there are several benchmarking tools to test your network speed from host to router:
Openspeedtest Server
Libre Speed Test server
IPerf Server
If through those tools you consistently get sub-optimal speeds you’ll want to check to make sure you don’t have QOS enabled and no issues with cabling. Network acceleration should be enabled as well. If you have client speed restrictions then network acceleration will not be possible.
After further testing, I’ve found that the speeds on my other computer are fine. It seems like there’s an issue specifically with how this machine connects to the rest of the network.
I suspect my ethernet switch might be failing, so I’m going to swap it out and get back to you all soon. Thanks for the help, everyone!
