Out of curiosity, when you tested indoors vs. outdoors, did you change from mains power to battery?
I believe Win10 has power management settings for the wifi adapter, and I seem to recall that we've had the odd post concerning that. Just wondering if Win 10 decided to power down your adapter on you...
Mounts: ES PMC-8 EXOS2
Scopes: SV 102EDT, ZWO 60/280 Guide
Cameras: Nikon D5300, Altair GPCAM2 290M
Software: ASCOM, CdC, AstroTortilla, BYN Pro, Sharpcap, PHD2
Computer: Thinkpad x230, Win7Pro/64