JUCE plugins cause poor DAW UI performance on Windows?

I should add that, these sets are large BUT the cpu meter usually hovers around 45 to 50%. That’s Live CPU meter. Window’s cpu meter shows an even smaller CPU footprint of under 30%. The Audio side of things in live is smooth, no audio glitch, no stutter. No crackling. Just a ridiculously slow and hazardous framerate that makes Live sets inoperable.

This doesn’t seem like an isolated issue :