Hello Diego_Intel,
there are dozens of my Subscribers (YouTube) that have this specific INTEL-only problem as well.
The unknown number of people having this INTEL-specific issue is thousands at least for sure.
If you need any additional information, please ask for it, and all of those affected will try to help INTEL to help them.
Although it already has been mentioned, I try to sum it up:
If you read all of the comments of the aforementioned link https://mojang.atlassian.net/browse/MCL-767 , you will get the image how this problem looks like, and what people think is the Issue.
I can confirm that the Game Developer itself stated that the other Graphics Card companies did update their Driver while unreleased Snapshot Versions of the Game Minecraft were in a testing phase, and that they did state that INTEL did not update their Drivers, unlike the other companies.
Minecraft needs javaw.exe to run.
With the old Launcher, only 1 single javaw.exe was opened (you can see that in the Windows task manager).
Launcher and Gamewindow were basically "the same" (same window).
With the new Launcher, it starts at first a Launcher to login, and after chosing the Gameversion, it launches an extra Gamewindow which opens a second javaw.exe.
And apparently this is what the INTEL driver does not recognize as 3D-application for the GPU anymore. It seems to ignore it.
We have not found any way, be it by using Java arguments or anything like that, to tell the INTEL driver to see this second (Game)window as game application that needs Hardware Acceleration, hence people have horrid Lag/low FPS and cannot play this Game anymore. Basically you've had at least 60-120 FPS before, and now drop to unplayable 2-20 FPS at max (unsteady FPS).
The INTEL driver doesn't seem to understand this second window is a Game.
If you need any help - for example a Video how it looks like etc. - please just ask for it.
There are so many desperate Gamers that cannot play their favourite Game anymore and can't afford to get an additional dedicated GPU to circumvent the "INTEL-GPU-only"-problem.
Thank you kindly in advance for your effort,
Meri
EDIT: Anyone having more tech knowledge than me please correct my above text in case I wrote something wrong - thank you very much!