DISCLAIMER:
i dunno if my settings are not optimal on Bitwig, Reaper & Studio One as i demo them and am fresh to them! i set EVERYwhere 128 samples, 24 bit and 44.1khz, i added so many FX VSTs until it started to crackle in my playback sound in fl studio, then i copied all settings to the other DAWs.
All projects have the following instruments & FX with the same settings!
SYNTHS
3x Instances DIVA – Divine
1x Avenger
FX
Mixer 1 – 4 each 1x Fabfilter Pro Q2
Master Bus

RESULTS
BitWig

(i dunno if this is the right screen as there is no CPU percentage?)
FL Studio (around 68% - 70%)

Reaper
(i couldnt find the screen to show me the CPU usage? but it crackled too)
Studio One (around 60%) - NO CRACKLING!

this test might be half As*ed! but i wanted a fast test and the only DAW with the same FX and settings without crackling was Studio One! im surprised. i should with your help improve in each DAW the settings though! FL STUDIO surprised me, it is often said it sucks with CPU usage and REAPER is king, but Reaper was not great either, as i said please help me improve the settings so i can test the same projects with the settings if i made a mistake at all, if not then these are the results.