The plasma demo you linked runs at a stuttery 40fps on Firefox (ubuntu 20.10) on a quad core Ryzen 5 laptop. The fans immediately spin to max speed. I'm not impressed...

Here's a hard question, why is this surprising to you? What are you missing in development--is this a gap in testing? Are you hamstrung without support internally to bake this as long as it needs? Rather than double-down on extolling the virtues here, it's time to double-down on fixing the team and the product.