ok. So, this is not a major issue.
Anyway, how to solve this? = how to have the full 3d performance?
BIOS update?
Other?
This PC will go into a family where the big boy is studying computer science and could be occupied with improving the system (the small boy = 12 years will have this pc).
So, if I have no time, I will write to him a TODO list for improving that PC.