Paul has well defined the proper use of a computer on stage.
More details in this topic, applicable to all softwares and computers: gig performer
Personally ( as windows user) having a single computer for all purposes, I am using a dual boot system:
-1 dedicated partition system with windows 10 x64: audio exclusively.
-1 partition system with Windows too for everything else.
-1 partition for documents (sound libraries, plugins, projects, photos, viruses…)
In rehearsals and on stage, disabling antivirus, firewall, networking, notifications is safer.