That's great news.
To summarize, you now believe that the spikes observed in the latency monitoring software were caused by the Dell software, and after uninstalling that, things are good?
If so, I'm curious if you did anything with device drivers from Dell, if there even are any (I explained about this above). I'm assuming you only needed to remove the 'helper' software they bundle onto a new PC.
Your summary is correct. The audio spikes observed in the latency monitor tools, the audible crackles thru the JBLs and the CPU utilization glitches all vanished after I uninstalled the Dell software that came bundled with the new PC. The specific offending program[s] are listed in earlier posts. To be sure, the idea to uninstall them was no stroke of genius on my part, just a shot in the dark as something easy and risk-free to try. It paid off.
It would have been nice to know exactly
why and how the Dell software caused the problem but the Dell people weren't smart enough to even begin answering those questions. It has to be more that just the act of "phoning home" because my email tool "phones home" all the time and is well behaved.
Along this frustrating path, Dell did reinstall their drivers and the Tascam driver was also reinstalled but like so many other things the problem remained after doing so.
The lesson here is that like other forms of hygiene, computer hygiene is important.
The more software programs you have on your machine the higher is the probability that you will have problems.
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