Beautiful, but loading forever

The theme is beautiful and we were exited to use it for our company. We checked out the basic version which works- and we found it worth to pay for the pro version.
But: What a disappointment!
Sadly it is impossible to work with it, because it is loading forever: Every klick you make in the backend takes 1 up to 2 minutes of loading before you can work with wordpress again. Everything stands still meanwhile. It is not only the “save” button – it is each and every button/ function in the theme-costumizer!
Off course we checked it all out:
– All plug ins switched off
– All other themes worked brilliantly ( also the basic version), only when using AccessPress Parallax pro it would′t work
– Checked it on different domains and different servers: same results
– Checked it with different internet- connections: 6.000 kbit/s and with 50.000 kbit/s –
same sad results
We asked support for help. They offer 24/7 support via chat – but this is only somebody who tells you, that you have to write again to certain support-people who are not on duty right now.
All matters about buying and updates were answered by support quickly.
But some technical support answers were not given at all!
We told the support-team about the loading- time problem, which makes it impossible to work with this beautiful theme. We got one answer telling us, that our internet is to slow.
Our answer: We wrote a detailed protocol, showing the exact speed and the exact loading time of each button. (Again it was up to 2 min per click.) We asked for help – or our money back – and never got any answer!
We tried the update again on a different server months later – again same results. Searching the internet we found, that there is a few people who had the same problem with everlasting loading times – who then had to work with another one.
We tried all, had lots of work.
Dissapointing – the theme looks perfect and so does the support promise – but that′s all. I strongly recommend not to buy it.