ah… in NVCP you not need to set V-Sync, let it on “application decide”. You enable Vsync in MSFS itself.
The max fps setting looks good ( ps: the second limit about “background fps” is later usefull if you have the application not in focus.Then not full fps are necessary and you can safe energy )
Windows Event Viewer: RED is bad and if you find “interessting” nearby in yellow, eg. somewaht about driver-reset, then it might also interessting.
Here is a link with a HowTo for the Windows Event Viewer 
: Simulator doesn't start anymore at all - #603 by MichaMMA