OK I will update little under this subject adding my latest findings.
Zukoo about issues on WIN 7 - never had simialr report, it was always problematic for win 8.1 users or win 10 lately...
Let me explain who exactly have this problems.
Problem is touching directly everyone with laptops that posses "hybrid" type of GPUs. What this means.
Latest generations of laptop models are made in new way :/ They attaching 2 GPUs to it but ONLY 1 in real has direct connection to output.
So its Intel as integrated GPU + AMD/Nvidia as additional chip that is "only" rendering (calculating) the higher needs in certain momment. Still whatever was rendered by this amd/nvidia is moved via Intel on laptop screen :/
Producents promoting these "new" type of laptops as highly efficient (in many cases writing even its dedicated GPU while its just bullshit) but its just lap with integrated Intel GPU with addiotnal calculation powers from other technology.
And here the problems starting to appear - 2 different technology together... hmmm There are loads of documented problems comming from this on multiple games and softwares.
More findings.
I had chance to connect remotely to one of such laptop that was on win 8.1 and spend hours there trying and testing everything whats possiible and here what I noticed:
* When you diactivate INTEL GPU under decie manager - lap will jump(more less) on the second GPU. When you start eo client this way it will appear with HP bars = all full proper normal.
BUT in this way this second GPU is not able to process the play. Game will lag and most probably your second GPU drivers will crash :/
I tried installing pretty all versions and even modified drivers for AMD (in my case) but the problem was as best the way I described
I tried even to deactivate INTEL -> run game-> and activate back but then game simply hang on black steen - so no way to trick it this way.
This means those types of laptops cannot simply run anything properly just from this second GPU (like normally should happen in dedicated cards). There is anyway INTEL required to post data from second GPU onto screen.
OK then I tried to install different types of INTEL drivers. Stil this didnt change anything at all
* The other important info is that The same laptop on Windows 7 work fine - meaning on laptop with hybrid GPUs.
So what I strongly believe is that the whole problem lies just on INTEL drivers part made for new windows system. Its like All drivers for win8+ are missing something important to be able to transfer "everything" what was rendered by the second card.
Solutions?
I guess we should look solutions directly in this INTEL drivers for windows 8/8.1/10 made. BUT now since Zukoo wrote someoen with Win7 reported this... its another mystery. Still I would request anyone to confirm that Really on win7 this exact problem happened.
As from what I seen till now at least, reinstallation to win7 were fixing issue on this hybrid GPU type of laps - but maybe not on all ?
Thats what I know for now. I still have possibility to do more tests on Lenovo with Intel+Nvidia GPUs in hybrid now... but I dont have much more ideas :/
So basing on my progress I would appreciate the ideas to arrive here
Cheers
P.S.
Sorry if I made many mistakes

I was writing this in big hurry just to leave some more details about issue.