Does it use a different app on the Ultra? I'm still using my second generation and (aside from some nonsense earlier this year about expired certificates) still

Does it use a different app on the Ultra? I'm still using my second generation and (aside from some nonsense earlier this year about expired certificates) still going strong - can't ever remember it "Crashing". Perhaps it's not "app weight" but more specific to the 4k video or SoC implementation?