My HDD is slow 5400RPM and when working with 10GB size files it is impossible to use the computer until that big file finish re-creating a new copy/muxing/writing/etc. depends on process, the thing is it eats up all HDD speed and no other program can be used while this process runs.
So I was thinking maybe I could limit HDD write speed for programs I work with, so then it would reserve free HDD leftover speed to use for browsing internet or playing mp3s while the big files are being processed.
wmic process where name="calc.exe" CALL setpriority "idle"