After the resume from sleep the service need 10..20 seconds to resume the hardware monitoring.
Are the other monitoring sensors (mainboard, network..) working?
That may be the design however I can leave it for 2 minutes plus and it does not resume automatically.
NB in my case none of the sensors are showing any data even though in Services.msc (as well as in AquaSuite) the Aqua Computer Service shows as Running.
I have to restart the service to get any data