Thanks for advices. It seems it was false alarm at least to the background noise. My hearing is good and it seems I am hearing the in build speaker electronics. Laptop and speakers close and on small volume. Will just put some distance between myself and speakers and it should solve problem
Hmm switching usb port seems to have helped. At least right now I am not able to duplicate previous slow switching before songs with thump thump. Though theres now short irritating tssp every time when audio starts >> new song, movie or just clicking 20 seconds ahead in sound track.
Just installed the driver from behringer homepage + restart. Now I can move 20 seconds forward and no noise but instead when I manually want to switch between songs it goes again blinking with thump thump effect

It looks like problem is with software driver I am trying to use. But its the one I downloaded from behringer homepage
BEHRINGER_2902_WIN32_2.8.40.zip
RMA? You mean like exchange for new uca202?