Will turning off high precision timer improve VR performance?

I've been reading that turning off the HPET timer increases framerates in gaming. Has anyone tried this with VR to see if performance improves?
 
Don't think it would make any real difference as mine is already set to 1ms... I feel that turning off Windows Fast Start is a better option, so your pc actually truly shuts down, thus not increasing your 'uptime' values and causing floating point precision issues etc..
 
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