It is up to you if you want to even use the Dell SA software. For now, I would uninstall it and restart the XPS 8930 when done. Then test the XPS 8930 for several days and see how it runs. If at a later date you want to use SA, be sure to install it from the Dell site in your native language.
I have owned XPS 8930 about three weeks. Dell SupportAssist sends error message every fifteen minutes or so: "Virheellinen rekisteriavaimen arvo" (in my finnish language version), which means: "incorrect registry key". SupportAssist UI has never been usable and even the product registration was impossible. Probably because it defaults to the US keyboard, not the Scandinavian Finnish I use. Have anyone ideas what I should do? Uninstall SupportAssist/Uninstall and re-install it from Dell pages/something else? This is not a big issue, but disturbing. In general, I have had quite bad experiences about the quality of software which hardware manufacturers put in their machines and this is one more.
SupportAssist, Finnish, incorrect registry key