Here is your Dell site...
https://www.dell.com/support/home/us/en/19/product-support/product/xps-8700/drivers
Support for XPS 8700
(1) Uh-huh, MSFT beat the Borg & totally assimilated our Dell Wi-Fi drivers. It happened back in Windows 1607 & hasn't changed since then.
(2) Dell stopped updating our Ethernet drivers at the version you first reported. I went to Realtek for an update when (in 1803 I think) it began to ask to "reboot to complete" its install. It worked when plugged in, but just kept asking.
I see there is another one now at Realtek to lift me to what you got (though mine is FE). I may not take it, as I like to stick with Dell & MSFT unless there is a problem.
It appears to get half-assimilated only by MSFT.
(3) Update your other drivers, if the Dell site has greater versions (& MSFT hasn't fully assimilated them). Input your
service tag to make the site hopefully more specific. Current BIOS version is in
MSInfo32 (ask Cortana). Your site has version A13. Normally, I'd take only drivers for devices that actually show up in Device Manager. I never took Nvidia drivers, for instance, because only Intel was in there. And try to get the driver first
through Device Manager (search automatically), which may actually get a higher version.
(4) When I plug in Ethernet, Wi-Fi remains ON too, at "START, Settings, Network & Internet"...

And, after the reboot in my test (after going to Private), both remained ON. The icon was still the Ethernet one, & my Wi-Fi printer remained in the Network folder. Does your Network remain Private after the reboot? If not, the Network
folder would empty (after it is refreshed, but that's automatic with the reboot). Now, I plugged in Ethernet, turned OFF Wi-Fi, went to Private - & surprisingly everything still showed up in Network - even the Wi-Fi printer showed up. So, it appears not to
matter whether Wi-Fi is ON or OFF.
(5) I don't think you've got an Ethernet driver problem, if the NET works. Does the icon have an "x" on it during a reboot at the sign-in screen? If not, I think it has gone on quick enough too.
(6) BTW, my SMB 1.0/CIFS is entirely OFF as in your picture.
(7) I do think you & Plarini have proven the problem is with that Function Discovery Resource Publication (FDResPub) service. We'd need to figure out why yours isn't restarting on its own. But I don't think
the fix you do is so bad, really. Here is the setting at its Recovery tab...
