Does #property tester_file keep files open across the span of the optimization - page 2

 
Lorentzos Roussos #:

it could be the read speed of your ssd too 

I had 2 as well and did some "prework" and now i have 3 , was surprised it only sped up 2x 

If you really want to know, all of that can be investigated with monitoring tools from SysInternals.