Hi MustaMT,
there is a lot of info on this topic (and also on Unified Networking Lab)
http://forum.mikrotik.com/t/routeros-virtual-labs/90606/1
My (somewhat dated but) working Mix of GNS3, Qemu and CHR versions is
http://forum.mikrotik.com/viewtopic.php?f=2&t=99658&start=50#p522618
- GNS3 1.4.3
- QEMU 2.4.0 (released August 11th 2015) using qemu-system-x86_64w.exe
- CHR 6.33.5
I set the CHRs up directly in GNS3 using raw-images
Startup of the nodes in GNS3 takes some time, but afterwards they run reliably and are quite responsive. I can access them either via Winbox (through a loop device) or via Terminal directly through GNS3.