Comment 10 for bug 1861612

> Well, in both cases (HIGH delays and callbackRequestDelay) we seem to have a threshold
> for the requested delay with a response switching between a 1 tick delay and a 0 tick delay.

But HIGH delays use callbackRequestDelay just like the scaler record does. So why does the scaler record appear to get immediate callbacks when the delay=1/60., but the bo record HIGH processing does not? And why does bo HIGH processing have a change in behavior between delay=0.01 and 0.005?