0 = /filter macros all
1 = /filter macros enhanced
2 = /filter macros none
All and none are self explanatory

Enhanced gives you output like superwho and /echos but hides stuff like can find blah blah macro or cleaned vars, extra fitlering options, etc.
Did you try to run a macro? or anything MQ related or did you just assumed that since no output MQ was bugged?