In fact I thought that this might be the issue since I basically closed my laptop while working with those 2 VMs and linux locked the session.
I did this multiple times so at first I thought that must be the reason the clock is out of sync.
But the problem remained after I reboot my whole system and made sure that all clock were in sync.
Then I tried to change that default etc/utc timezone setting in both whonix... didn't work and + I got an error during whonix check.
So I set back again everything in etc/utc like instructed and no more errors...
Now the connection works sometimes is superslow, sometimes is crazy fast.
I'm not sure. My host clock system matters? If that's case the strange thing is that until a few days ago I never had problems