Dell XPS 15 (9550) Wireless 1830 issues - Windows 10 1809

Hi, After upgrading to Windows 10 1809, my network connection (Dell Wireless 1830) was crippled to 2Mbps and unreliable. Hyper-V switch was configured to share this with host system. After changing Hyper-V to internal only and releasing the WiFi adapter speeds returned to normal. I have sent this feedback to Microsoft to investigate, however, while speeds are OK (i.e. internet test shows I can get 100Mbps) when the Wi-Fi adaptor is not configured to be shared with a Hyper-V switch, I cannot use the Xbox app to stream. Connection keeps dropping. Turning off Bluetooth seemed to help a little bit more but there are still issues. Using Windows 10 1809 natively (Bootcamp) on MacBook Pro 13 mid 2014 (uses a Broadcom Wi-Fi chip) works without a problem. While there have been some major changes to the network stack in Windows, Dell has not really issued more recent driver / firmware updates for Wi-Fi / Bluetooth (12 months ago for Wi-Fi and 2 years ago for Bluetooth). This seems to be a compatibility issue. Can Dell please investivate this issue! I have all the latest firmware / drivers / BIOS updates applied. I have also uninstalled / re-installed drivers for Wi-Fi and Bluetooth which has not changed anything. Thanks