Roon Runs Slow On Desktop PC

Actually, the suggestion to use the Nvidia hardware in place of the Intel HD Graphics 4000 hardware is probably the better option. This issue is almost certainly a conflict between the Intel Graphics driver for the HD 4000 and the OpenGL library.
https://community.roonlabs.com/t/roon-becomes-unresponsive-ghosted-out-completely/13683/10