CPU load issues on Pi Zero

[W2SJW]

Guys,

Not sure 100% if this is related to a specific mode, or to hardware.

#1 - ZUMspot on Pi Zero set on DMR only (new one with 1.3" screen) - CPU load 0.95 / 0.51 / 0.23 at 35.8°C (this is with no heatsink).

#2 - JumboSpot on Pi Zero with small screen set on YSF only (and not connected) - CPU load 2.22 / 1.33 / 0.9 at 44.4° C (and this is with a big-ass 14mm heatsink!).

Can anyone tell me why the Fusion hotspot is idling at such a higher CPU load, even with no active connector selected?

I'm going to let the Fusion Jumbo run overnight to see how it looks in the AM...