What can cause dimension duplication in GA?

Question

Analytics

Good afternoon, I’m not very familiar with GA ... I hope for understanding and help ...
problems:
1. At different stages in a certain dimension (let it be 1), I write down different values ​​\u200b\u200band pass it as in the code below:

ga('send', 'pageview', {
  'dimension1': 'someVal' + N
});

'someVal' + N --for example, to understand that they are always different and are not repeated for the entire stay of the user at the SPA.
By debug extension, all norms are transferred to the GA, one unique value for this dimension. But here in the stat I see the appearance of only the first transferred or some kind of intermediate and last, and sometimes without the last ... Somehow it randomizes and at the same time very often duplicates the last value.
All passed values ​​are missing, and some are duplicated. Usually I set them 3-5
dimension1 as session, I also tried for a hit, but the problem remains the same ... not all of the transferred values ​​are present, and some are duplicated ..
2. The stat for the merchant does not start, according to the manuals it is written to add after creation but nothing happens :(
Well, more than a whole piece of code, with the addition of #1:

ga('create', 'U.....',{'cookieDomain': 'домен'}, param);
ga('require', 'ec'); // не хочет подтянуться
ga('ec:addProduct', {
            'id': productName
        });
ga('send', 'pageview', {
     'dimension1': 'someVal1' //someVal2, ... , someVal5 
});

Even if dimension1 is set only 1 time on the page, the last value is duplicated several times in the stat itself, but at the same time, it was sent 1 time for debugging.
Please tell me what could be the problem...

Answer 1

if not through the measurement protocol - everything can be
maybe this is a natural behavior?
look with an external debugger, not under GA