"pre-compile/save internally" video ONCE for all slowmotions plays?

[thoste]

Assume I have a short MP4 video (~1min) encoded with AVC H.264
I want to play it at slower+slower speed multiple times.
So I press "-" and second "-" key to slow down play speed.
It works although VLC need some significant computation time (up tp 5 second) to calculate/convert internally the video for playing it in slow motion.

Now I want to play it again at slower speed. So I drag the time slider to the beginning.
Any once again VLC needs 5 second to calculate/convert internally the current video to slow motion.

Is there a way to tell VLC "Hey vlc I will play the current video lots of time in slower, slower speed. Put converted video into RAM for faster access from second run onwards"?