I'm looking through our installation of Universal Analytics through tealium and it appears to be firing twice which is causing an extremely low bounce rate.
Since this is a fresh installation of that UA code I'm not sure why this is happening however, I did note that the significant difference between the code fires is t=pageviews and t=screenviews milliseconds apart... so that suggests to me that we may be sending out the code twice, but I don't believe that is the issue since we are also running classic GA alongside (through tealium) with a completely different UA code and we're receiving good data into that source.
I also noted some strange behaviour from Tealium on our mainsite... When I'm in chrome the utag populates, but none of the other tags we have switched on show up (but it's still tracking!?!); whereas on one of our subdomains, the appropriate utag versions ("utag.js", "utag9.js?utv....", etc) show up.
I'm not sure how to interpret this.
1) So lets deal with the double firing first
2) Then lets deal with why things aren't consistent.