Hello,
Sometime in the past few years my home router (hAP AC) has gone from having very fast performance with fasttrack (~6.39 or 6.40) to very slow performance (6.42 is much faster without fasttrack). The issue causes me to get 20Mbps maximum download on an ISP speed test on my wired PC, whereas I continually get 160Mbps download with fasttrack disabled (the CPU is not anywhere near maxed out at the time, only 10%). Re-running the speed test results in a consistent result depending on whether fasttrack is on or off (always 20Mbps with fasttrack on, 160Mbps with it off). I had simply disabled fasttrack because it was fast enough without it, but the other day I tried to figure out what was happening.
I reset my router to factory defaults and did not change any settings, and repeated the speed test. The result was 160Mbps (with fasttrack). So, then I became convinced it must have been something with my config. I took a .backup file of this factory default state where I received 160Mbps with fasttrack (so that I could quickly switch back to compare), and then restored my old config .backup that had the fasttrack slow performance issue. Immediately I saw performance of 20Mbps until I turned fasttrack off, and got 160Mbps download again. Then, to verify, I restored the .backup file I had made just 10 or 15 minutes before of the factory default config (with no changes). Strangely, the fasttrack slow performance problem came back with the restored factory default .backup (disabling fasttrack again resulted in 160Mbps throughput). I do not quite understand how that could happen since the .backup was taken when fasttrack was getting the 160Mbps and is simply the default config of the router with no changes.
However, if I reset the router to factory defaults (as opposed to restoring the .backup of the same config), then suddenly fasttrack works again at 160Mbps.
I have opened a ticket with MikroTik because this bizarre behavior has me at a loss for what might be the cause. Has anybody seen any issues like this?
Thanks!