visolator solved it.
8:33 PM - Visolator: It's caused by directx when installing a game
8:33 PM - Visolator: you can fix this by right clicking on your blockland.exe, go to properties, somewhere around there there's a dpi settings, make sure that's check
8:34 PM - Visolator: it will make your blockland ui smaller, but it does fix the mouse problem