DNS Setup

[NonesZA]

@dadoremix

i have strange problem also with DNS from last 3-4 days
i use Mikrotik routerboard 493 mikrotik version 5.2
and all is good, but now not..
my problem is.. SLOW opening web page, when i resolve DNS VIA mikrotik os, and when is DIRECT on modem.. speed is good
Download is good 4 Mbit via mikrotik or direct, that is not problem, but only in DNS
i try restore backup from last mount.. nothing ???
PC is on MS windows 7 x64

only if i downgrade back to 4.x routeros ? but i dont understand.. all is working just fine, and now i have these problem, and i am nothing modified is mikrotik v5.2.

I have the exact same problem:
http://forum.mikrotik.com/t/dns-resolution-intermittent-issue-possible-solution/64103/1
PC’s, Mac and Tablets all have issues with DNS and very slow opening of webpages.
I have tried ROS 5.X and 6RC11 and both give issues.
Does anyone else have any insights?

Im going to try the cache size and ttl fix now.