Intel Wireless-AC 9260 and Cisco Anyconnect NAM 4.6.x

I've got a couple new Dell Precision 5530 notebooks that are shipping with the Intel Wireless AC-9260. Running W10 Enterprise Build 1809

We are using ISE 2.4 and a Cisco 5520 WLC on 8.3.143 running Aironet 3802-I APs

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Currently have Anyconnect 4.6.03049 deployed en masse, but have also tried upgrading problem units to 4.6.04054 and 4.7.00136 with similar symptoms

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I've had a recurring problem where it seems Anyconnect cannot adequately address the wireless adapter in this notebook. It sits at "associating', bounces a couple times to that, then resets the interface and does it all over again. The WLC never registers an association. Rebooting sometimes fixes the problem.

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I've found part of the root cause to be a hidden power setting in Windows, discussed here:

https://www.reddit.com/r/Windows10/comments/6x9iwy/how_to_prevent_wifi_disconnect_when_locking_screen/

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But it does not solve the actual problem, but rather one of the many symptoms. It seems that the current intel drivers/bios or whatever in this combination doesnt seem to address powering the wireless card up. Almost like the OS thinks the card is there, but it really just isn't. When the computer sleeps, it often doesnt come back on. Or just at random times, the card just stops working. Uninstalling Cisco Anyconnect, it works fine, but we can't, because ISE.

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Swapping in an Intel Wireless AC-8260 from an older gen notebook fixes the problem, however, the 9260 works flawlessly in the older generation notebook which makes it all the more confusing.