I don’t think that’s true. Everything takes ~20 seconds to index my machine. I think Everything reads NTFS file table directly. Maybe you didn’t give it Admin privileges?
dynamic_pressure = 0.5 * ref_density * equivalent_airspeed^2
Its not a function of indicated airspeed. Indicated airspeed needs to be corrected for the compressibility of air to obtain the equivalent airspeed. At low airspeeds/altitudes, the indicated airspeed and equivalent airspeed are very close, so your equation would hold up just fine.