Yes, the card performs quite stably. Initially, it was purchased for another laptop, but I am currently using it in this one.
The BIOS version was downloaded from this forum; you can search for it - there is a separate thread.
The video card was purchased here: https://www.x-vsion.com/product-category/mxms/mxmn/ Of course, there are certain risks, but several people have bought from there and everything is fine.
No modifications were made except for attaching the heat sink, because the card originally did not have one.
My laptop uses LVDS and therefore Optimus. I may get an EDP cable and display later, but I have no plans to do so at the moment.