I got latest now (5rc08) version of mt on three routers one rb1000 and two x86 (both rack servers hp and intel). Issue emerged when upgraded from 4.11 to 5rc7 and still remains 5rc8 - i got 1000+ simple queues both on rb and one of rack x86 (p4 3ghz ht), same as 1000+ leases dhcp and some 400+ firewall rules. On third server i got about 700 nat rules (x86 xeon 4x 3ghz ht).
Issue is when display list of leases/queues/firewall/nat in winbox (2.2.16-2.2.18) it shows like 444 of 1002 and have ro relogin to display all. It’s most annoying when sometimes need to relogin couple times to display all I want.
Second issue is when I torch some queue it says “couldn’t start interface is not up and running (6)” and puts 0.0.0.0/ instead ip in src and 0.0.0.0/0 dst ip. Of course it works when I manually input ip.
Third issue is stalling when columns tx rx are present in view of simple queues (it somehow pauses [the view not transfer] rx/tx when making some adding or modify any queue or when just looking for a while, refershes only on relogin), same thing in firewall rules filter - packet counts/byte counts.
Fourth issue - filtering queues in order to copy moves them last, adding new queue movest them first / same to firewall filter rules. I can live with it but all of those are annoying and cost time to workaround.