Hi,
I just upgraded to 1803 using 2.9e miner version. The miner now gets stuck at:

It stays there for at least 1,5 hours till now.
Looking forward to your help!
Why you are waitng so long?

You can close miner window - you willn't see anything new for the next few years...
Better close this window, and than update your video driver to last version with support 1803.