I think, I find a reason such behavior I described earlier..
Please take a look into attached screenshot.
Somehow (I do not know, I did noticed this before) after that reboot proxy server squid do not start properly..
I have made some test with enabling and disabling squid and result is on the screenshot.
Squid wan not running properly until 14:30 then I started the squid and traffic and queues has changed... then I turn off the squid again (did not reset the firewall states !) and traffic has changes again...?
What do you think, is it some kind of bug or normal behavior?
Squid is running transparently, it is important, couse I do not stopping it only disable transparent proxy..