Now it's fixed in 19013.1 - good build

Yes I used older driver.
GeForce 378.78 WHQL driver download
Also I had to disable automatic driver update, otherwise it would install newer drivers that were problematic.
Edit:
Well today I...

Problem still persists with 19008.1 build.

- - - Updated - - -

OK I can't edit older post so I'll add it here.
I have a perfectly running Insider build 18999.1 where all is good full-screen...

Hello!

The title said the most.
Latest Insider build - 19002.1002:
3DMark Fire strike on 18999.1 score - 17000 points
3DMark Fire strike on 19002.1002 - 12000 points

But I noticed after...

Edit: wait a minute ... I'l double-check.

Interesting - running Unigine Heaven benchmark in windowed mode - no performance hit but running it as usual - full screen makes it about 1/4th slower,...

Hello!

I'm from Estonia. Have used Windows for a long time, most desktop versions from 3.11 to 10 Pro (Insider). Besides Vista and 2000.

Strange that I had no issues installing the build from Microsoft update directly, but so many have had.
But could I get a cofirmation from people that have successfully installed 19002.1 that their...

The latest build (19002.1) = GTX 1070 3DMark Fire Strike to go from 17000 to 12000
I did use DDU a couple of times but reverted back to 18999.1 where the score is back to normal.
Oh, and the...

Well ... manually updated to 18362.86 but still can't get past the "get started" routine.

Hi!

I used to get insider builds since about a month ago. I simply can't enable insider mode
:230969230970
When I press Restart now it doesn't do anything and after manual restart is again asks...