Hi @James18 Please try the below steps and let us know how it works 1. Open Virtual Machine configuration window. 2. Set the maximum volume of Memory within the recommended limits on your Mac. Make sure you keep at least 50% of total RAM being still allocated to the Mac OS X. 3. Switch to Options tab -> Optimization. Make sure that Performance option is set to 'Faster virtual machine', and Power option is set to 'Better performance. 4. Switch to Hardware tab -> Video (Graphics). Set 512 MB of video memory. Set the desired DirectX version from the drop-down menu. 5. Check Enable vertical synchronization. 6. Switch to Security tab > Check Isolate Windows from Mac option. 7. Uninstall 3DS Max and reinstall it