Integrating CEF is a good alternative, especially for small projects. We've investigated it in a details and wrote an analysis on What should developers consider when using Chromium Embedded Framework (CEF) in their games? I would love to hear your feedback on it. Please find it here
Yeah I came to the same conclusions as you after looking into CEF for a few days. The lag, and the cost of pixel transfer make it fairly limited for all but the simplest UI. The system you have is exactly what I would like, but unfortunately way out of my price range for a hobby project. I also looked briefly at Awesomium, including downloading and running their demos, and they barely offer anything beyond what CEF offers as far as I can tell. They still use multiple processes, and can't handle rendering more than one fullscreen target at a time.