@killyourfm oooh, that's a hard one. Generally cursors in games are assets in the game files and it's up to the developer to support variable sizes.
One idea I have, try to decrease the resolution of the game to see if that makes a difference.
As a sidenote... retro? _RETRO_? Torchlight 2 only came out a few.... holy hell 11 years ago... I'm old.