lobby/channel freezes

Solved by me self

Can you give us more details? like have you tried reinstalling?

Did 3 times.
Only not formatted, but have big games, and the downloads are long.

hmm, that's odd, delete unnecessary programs, delete temp and prefetch folders, trurn off your anti-virus, run gamebooster, dunno if that doesn't work get support from z8games maybe they can help you, sorry.