I have disabled in dnsmasq the : lcprd*.samsungcloudsolution.net
and it is much much better,
this was really crazy, when I went to main menu, immediate request to lcprd2.samsungcloudsolution.net, same for the hub etc.. almost during each operation with the TV was a request to this address, and after disabling it everything is still working fine

now I need to get rid this Netflix crap. seems all the time is running in background and doing always some traffic to *.nettflix.com