This has not been my experience. I have frequent crashes with Fusion that seem to be related to specific nodes. Checking my computers usage it doesn't seem like I'm running out of juice either.

When it works, it's really nice and I'm sold on the node based workflows, but it's not all entirely roses.

Resolve itself is excellent, Fairlight works just Ok and is still heaps better than Audition ever was. But Fusion I feel like hasn't seen enough love in the past few years.

The whole Reactor setup for installing Fuses feels really broken and for the free users they disabled those entirely in version 19.1.