I just received a new Surface Pro 2017 (i7, 256GB, 8GB) and have had a few issues and questions, but to be kind I'll field them slowly on the forum . Starting with the most annoying, and most serious: At home I use an external monitor (Dell 2415Q, 24" 4K) using a miniDP-to-DP cable (no separate adapter). This configuration works well except that on some web pages with videos the screen will periodically and randomly black out for about a second. The screen on the SP itself (set to extend the desktop from the Dell screen) doesn't. This page consistently produces the flashing. The interval between flashes is irregular, but on that web page it's usually several times per minute. Even on some of this forum's pages, the blackouts occur, and I'm assuming it is related to the video ads inserted on the page. Not all the forum pages, but most of them. It's not browser-specific. My main browser is Vivaldi, but the blacking also occurs on Opera and even Edge with the same web pages. Any ideas what the cause is, and more importantly what the fix is? PS: Any idea when the forum software will be updated to provide "Surface Pro 2017" as an option for our display profile?