I have upgraded to Windows 8.1 Preview on my Surface Pro tablet successfully. The new OS brings many great features. I touch down Arrow button and search from Applications list and it is fast like Windows 8. However, everytime I use the new Bing-powered Smart Search and it runs incredibly slowly. If I type in home screen or another app, it takes about 5-10 seconds to initialize the search and then shows the results.
I have noticed other issues on my computer so far. Sometimes I search “Services”, it just takes ages to load and can’t be completed with the error message “Something went wrong with your search. Try searching again“. It is no possibility for apps.
Then I go to disable Bing and set region to EN-US, but still experience the same problem. I think it might be due to a corrupt install or system bug. It is really serious issue. Comprared to Windows 7, the result list becomes much less and slower and is not very efficient for working. I will restore back to previous Windows 8.0 OS.