I had assumed they all worked like that.
There seem to be huge differences between different DAWs regarding CPU consumption.
And hey, usually we create many tracks to be able to play them at once, right?
I read an interesting discussion in the Reaper forum, where Reaper was compared with other DAWs, especially regarding needed system performance. It seems Reaper is one of the best performing DAWs and Ableton one of the worst. Studio One also had a bad reputation regarding CPU, as Logic too some time ago.
But times are changing, at least for Logic and Studio One. I have both, Reaper and Studio One, latest versions, and both perform pretty well.
But here and there some VSTs are causing headaches, because they run on one core only and are pretty CPU hungry. A top candidate for example is NI‘s Polyplex, but Pigments can also be a CPU hog sometimes, depending on the used preset.
PS: Ok, we can bounce CPU hungry MIDI tracks to audio, but hey, this is a workaround, right?