In 1.08 when I set MvpHighPriority to true it doesn't seem to alter the priority of the PVRX2.exe process. If I switch to using GBPVR.exe as the MvpServer it properly sets that process' priority to AboveNormal.
Any reason why? I'd hate to see it dropped. I found it particularly useful when running GBPVR on a system that's also used by the family for other things (like playing games). Generally speaking, it should be desirable to run realtime processes at an elevated priority.