Mikrotik - RouterOS Disable FastTrack To Limit Bandwidth
You can read more about FastTrack from the Mikrotik Wiki on FastTrack. The function has it’s advantages by increasing throughout and reducing CPU load. However I wanted to limit bandwidth to clients and FastTrack had to be disabled in order to limit. From the RouterOS command line move to /ip firewall filter and issue the print command to view all available rules. Rule 4 has what we are looking for which is fasttrack depending on previous changes made to your rules the placement maybe different resulting in a completely different number.
Now issue the disable command along with the rule number you wish to disable. Alternatively the rule can be removed completely with the command remove but I rather preserve it in case I needed at a later time.