Defer loading javascript – heavy theme load time

Hello! Could not figure it out why page (Highend) needs up to 15 second to load:

Running diagnostic on different sites and found out It contains:

– 51 Javascript files total of 1424 kb!! Which all loads before the site loads!
– 30 CSS files total of 1488 kb!! Which all also loads before site loads!

If I knew that before I bought this theme, I would never even bought it! Submit it to the Google or whatever search engine, has no point because site is just to heavy! So here my request for the future update:

Defer loading javascript and CSS

I know the site needs those thinks (probably not all), but don’t just load all of them together before the site loads! That’s not fair! You know that this is a huge problem and this is version 3.1.2 and the problem still exists!?

For those users who can identify/assign scripts correctly, you can defer it with help of this site

Would be helpful if you could post Java script identification here. So other users would know, what to defer and what needs to load first!

Thank you all in advance!