I used that command to set the IPv6 firewall and ordered the rule as described, but it didn't solve the problem. I need the IPv6 because my internet gets better and my ISP uses CGNAT on IPv4.
I disabled IPv6, rebooted, confirmed it is disabled, but that also didn't solve the problem.
Out of ideas for now but you should definitely use fasttrack on IPv6 as well, ideally with hw-offload=yes, if that is supported on IPv6
I was using version 7.19.2 and it seemed to be working fine, I don't remember. But when I noticed the problem, I updated to 7.19.4, which didn't solve the problem. Then I updated to 7.20beta7, which also didn't solve the problem.
If you think that it might be a regression in some version, consider installing an older version, just remember that you need RouterOS 7.18+ for IPv6 fasttrack support.
Manual install instructions: Upgrading and installation - RouterOS - MikroTik Documentation
Download Archive: https://mikrotik.com/download/archive
You need:
routeros-<version>-arm64.npk (example: routeros-7.19-arm64.npk)wifi-qcom-<version>-arm64.npk (example: wifi-qcom-7.19-arm64.npk)My WiFi is still very slow, but thanks everyone anyway.
I left fasttrack enabled for IPv6, thanks. I'll wait for the stable 7.20 release, and then I'll see if I can test an older version if 7.20 doesn't solve that. But even though I didn't cause any damage to the router, it seems to have some kind of hardware defect because, if I understand correctly, a user above tested the settings and had no problems.
try 7.14.3
Your issue is purely an L1 problem - modulations are low. No security settings or IPv6 configuration will fix it. Have you recently changed the AP location or placed something (like metal, concrete, or electronics) near it? That could be disrupting the signal. Also, have you tried downgrading the ROS version? For testing purposes, you could try using AB builds.
I tried 7.14.3 right now, the result was the same.
One more important thing I tried was restoring a backup from 2025/05/11, at that time it surely should not have problems, but that didn't help... so this reinforces my hypothesis that the hardware is damaged.
I didn't move my router, it is on my bedroom, extremely close to me, it should not have any problem with signal strength or signal disrupt. I tried downgrading the ROS version, but the result was the same.
Did you try limiting the frequency range? I just had this fix a problem where the 5 GHz radio wasn't even visible, but while debugging it I also experienced low performance at the margins, as you're seeing, before I choked it inward.
without a spectrum analyzer is difficult to discard interference as a reason, and without discarding that is hard to be sure is a hardware failure
Hardware issue can’t be ruled out, sure. Easiest way to check - back up the current config and restore factory defaults. Put the AP on a table, sit about 1 meter away, and run a speed test. What modulation do you get now? Make sure you test with more than one station.