Problems with ISTA installing.

[Jurchiik]

Hi everyone!

I've been fighting with ISTA installation for 2 days straight and now I need some help. 
I bought a separate laptop for BMW, re-installed window and at first I installed BMW Standalone tools and then I downloaded the ISTA 4.52.40 Standalone and Lite psdzdata 4.53.41 (Since I won't do coding, just diagnostics).
I'm using the ENET cable not K+DCAN.

After installing I noticed that it is extremely slow but looked like it is running. When connected to the car it read out the basic data just fined and then gave error "API-0013: INITIALIZATION ERROR". After studying forum I found this registry patch that should have fixed it but now I get the Error "Sec4Diag.OtherExceptions" and it freezes there.

So my 2 biggest concerns is - 1) How to get it properly running and scanning the car 2)How to make it work faster (I know that it should be a lot faster)

So maybe someone can help with detailed installation process, changes that need to be made etc? I remember BimmerGeeks time when I first installed Rheingold there was detailed pdf with all the setup files, for new ones I can't seem to find it.

Thanks in advance.