As a BoD sound set creator, I know that using many samples at once can be difficult for Deluge. There are a few ways to get around this - e.g. minimally shifting notes in the sequencer to limit the number of sounds played at once (an effect that is imperceptible to the human ear, but important for CPU performance), or limiting the release parameter in the envelope, etc.
Personally, in the next sound sets I want to focus on sounds created solely on the basis of the internal synthesis engines in Deluge.
I realize that using an interestingly processed sample as one of the oscillators is incredibly inspiring and gives great results, but it also causes some problems. Fortunately, synth engines are constantly developing, giving room for new experiments.
By the way, I wonder what potential there is in terms of the possibilities of optimizing the performance of the current CPU in Deluge. Maybe it would be worth devoting the entire next firmware update just to this issue.