on my sytems Adacity consumme a lot of CPU ?
so i get very often the colored wheel
Screen Shot 2021-05-29 at 10.32.39 AM.png
is this normal ?

thanks for your time and answear

Although controlled benchmarks show very similar results between Audacity 2.4.2 and 3.0.0(2), there have been anecdotal reports of 3.0.x running slower than previous versions.

Also, when a 2.4.2 project is opened in 3.0.x, there will be conversion time as Audacity copies the old .aup structure to a new .aup3 file.