I don't know what you mean by "queue error" but here's my situation:
I have a pair of mechanical NC probes, one toolsetter and one touch probe. Both are a bit sensitive to machine vibrations (the machine is aluminum extrusions) so I added debounce to reduce those. The toolsetter still trips when I rip a pocket off, but that's useful

However, because of the debounce, the probe trip is now delayed and unpredictable, so I have to probe very slowly.
The probe operation is:
* probe towards, record hit. Speed in the 1-2 in/min range
* probe away, record hit. Average the hits to get the final result
* G0 away to clearance.
The problem happens when the "probe away" is still unstable during the G0 move (there really isn't a "deceleration phase" here). I suspect it's a symptom of the probe design, as it gets *worse* as I go slower, as if the contacts were scraping past each other (yes, I know it's not that kind of probe).