tried, no result..Read recently in another thread that having STP/RSTP enabled on a DHCP target bridge can slow responses way down, you might try going to "none".
:local interfaceBandwidth
/ip firewall mangle add action=set-priority chain=postrouting new-priority=5 passthrough=yes protocol=tcp port=22
try my way of getting Netinstall work.
If it is disabled by default, then i have not enabled it.If you are not able to Netinstall the device, then maybe you have protected bootloader enabled?
https://wiki.mikrotik.com/wiki/Manual:R ... bootloader