Question 3DMark - too low physics score?

In all honesty, what were you expecting? An OS change often times asks for more resources and yester years technology tends to take a slight hit in performance.

Could you help me please?
Help with what? Windows 10 runs out of support towards the end of this year. You're also on a 3rd Gen Intel Mobile platform, so there' not much you can do to your platform to see a performance uplift. I looked up the motherboard and you seem to have an HP Pavilion G6, it's max ram supported is 8GB running at DDR3-1333MHz in spite of you having DDR3-16000MHz rams in each slot.

You might want to include the make, model and SKU to your laptop to corroborate or refute what I've said above.
 
In all honesty, what were you expecting? An OS change often times asks for more resources and yester years technology tends to take a slight hit in performance.

Could you help me please?
Help with what? Windows 10 runs out of support towards the end of this year. You're also on a 3rd Gen Intel Mobile platform, so there' not much you can do to your platform to see a performance uplift. I looked up the motherboard and you seem to have an HP Pavilion G6, it's max ram supported is 8GB running at DDR3-1333MHz in spite of you having DDR3-16000MHz rams in each slot.

You might want to include the make, model and SKU to your laptop to corroborate or refute what I've said above.
Why so dramatic drop though? Old score is 3800 while new one is 2072. Is Windows 10 latest really that more demanding than Windows 7 that my score drops by almost half? It is still running smoothly system wise. Or could it be a driver issue?

Yeah, it's an HP Pavilion G6. I've just checked in HWInfo and it is like the pic below. Feel free to comment.
YEzT8np.png