Nuendo 11.0.0 - CPU frequency drop down to 1Ghz

I still got the same behavior after the same test.
Nuendo 10.3.0 - CPU frequency drop down to 1Ghz

I just checked it here on my MacBook Pro 2017 with a Radeon Pro 560 and this does not happen on my machine. Which macOS version are you on?

It is on a MacBook Pro 15 2018 with a Radeon Pro 560X 4 Go and macOS Mojave 10.14.6