# Flint 2 WiFi internet throughput issue **URL:** \ **Category:** Router\ **Created:** [July 21, 2024, 6:55pm UTC](https://forum.gl-inet.com/t/flint-2-wifi-internet-throughput-issue/45045 "2024-07-21T18:55:34Z")\ **Posts on this page:** 1\ **Showing post:** 11
**Author:** ![j2zero](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/j/7ea924/32.png) [@j2zero](https://forum.gl-inet.com/u/j2zero)\ **Post date:** [August 13, 2024, 10:02pm UTC](https://forum.gl-inet.com/t/flint-2-wifi-internet-throughput-issue/45045/11 "2024-08-13T22:02:18Z")
> [@joffler](#): > > but I can say that there are speedtest servers that always work and ones that always "fail" > I can switch between them back and forth over and over and see locked 500-570 downstream on failing one > and 800-900 downstream on working one > if that is relevant to negotiated speeds If iperf tests or even the OpenSpeedTest (which I don't use anymore as it has a bug) report full 900/900 then there isn't likely an issue with the flint 2, it would be odd to see a different region getting slower speeds, if speeds are slower and repeatedly slower on certain servers then that would suggest that the servers dont have the bandwidth to saturate your line. You could check your MTU settings and compare settings from your old router. Also try with hardware acceleration off to see if anything changes. Regarding the bug on the OpeSpeedTest local docker (maybe the windows client too), if you test via Firefox you will notice that the upload speeds are not true, iperf is the best way to test. You can run the iperf server from the glinet plugins and connect your laptop to it as a client to test. > [@iPerf3 for beginners](https://forum.gl-inet.com/t/iperf3-for-beginners/34984): > > Hi GLiNet folks. I recently set up my first WireGuard server/client system on a Brume/SlateAX and have had fun testing it out. However I’ve noticed some speed issues that I want to investigate. In forums I’ve read that the iPerf3 function is great to test this, however I don’t know how it works. Are there any beginning guides on how to use iPerf3 to test network speeds on GLiNet server/client WG system? The furthest I’ve gotten is to install it via the plugins menu on the SlateAX. Thanks for an… --- _[View the full topic](https://forum.gl-inet.com/t/flint-2-wifi-internet-throughput-issue/45045)._