@Mykle1 well your desktop has a gpu but a not a better cpu and ram is not used ;)
And yes expected a slightly better performance given the 17% more cpu speed. However I will just stop playing video files in electron which kills my cpu (83%).
So I tried I different way to show the video. I used magic mirror like I would normalways but the video I did not show in electron, but opened omxplayer to blend the video in.
I tested using top. It shows cpu usage for all cores so don’t wonder about numbers over 100%
With the video on electron using a magic mirror module my cpu usage was at stable 250-260%. Using the omxplayer to show the video and showing the rest like I did the first time the CPU usage was different each time. It was always either in the 20% area or in the 150%. So it is a enormous improvement to the first option and makes it definetly possible to play it on a raspberry pi 3b ;)