Any chance you could send me a private message, too, regarding this problem, please? Or reply here? I'm having exactly the same problem, although I think my conflict is with AVG. Also, I don't have any other Garmin process running at all if i look at check "Show processes from all users". The only way I can speed up my computer (Windows 7) and reduce the CPU and cooling fan usage is to end the Garmin Express process. Any ideas?
Ran into the same problem with Express... takes my laptop from 4% to 100 almost instantly. Changing the setting to not run in the background does the trick as a workaround.
There is another active thread in the Express forum about WmiPrvSE.exe (Windows Management Instrumentation (WMI) Provider Host). It consumes a minimum of 7% and as much as 35% cpu at all times Express is running. Turning off Express fixes the issue.
This needs to be reported to customer care.