You will write your observations about the lag of the cursor.
After I put Occam on the advice of d3d8.dll in the EXE folder, the mouse began to behave more appropriately, but there were some difficulties( for some reason, the process Freelancer.exe it froze when entering a char, and it entered another char without this defect)
I also had to change the driver settings in nvidia inspector. (FPS became 180, although this value could not be reached before)
After testing the same thing with another player, we did not find any defects(perhaps he has not yet found the char that he goes to and his freelancer.exe freezes).
I have Windows 10.
Another player has Windows 8
I am more than sure this is a problem with Windows 10 and its unwillingness to support directx 8
link to d3d8.dll -put in C/Program Files/Freelancer Discovery / EXE
If you have a long download with this dll - delete it, it will not help you, unfortunately