I've been putting together single presets with a bit of flexibility to cover gigs. These run up the processor, and I've been getting into the red, if not hitting overload. I have been using Ultra-res on Cab IRs, presuming it's worth it. Some people have been showcasing similar presets where they don't use Ultra-Res IRs.
The Ultra-res takes about 4% processor headroom per cabinet (so 8% with 2 cabs). It really limits the flexibility of a preset to include a Plex Delay, and I'm not getting into esoteric stuff like Pitch, Resonator or Multi/Ten-tap Delay.
Is the quality worth it?