Please shut down the virtual machine. Then, open the virtual machine configuration window, navigate to Hardware -> Mouse & Keyboard and remove the checkmark from both 'Smooth scrolling' and 'Mouse pointer sticks at window edges'. Also, select 'Don't optimize for games' for 'Mouse'. And then, navigate to Boot Order -> Advanced Settings and type devices.usb.mouse=0 in the text field under 'Boot flags'. Close the virtual machine configuration window and then check for the issue.
Last edited: May 28, 2017