These following problems occur on Windows 8.1 Pro & Media Center Editions (clean installed) x86-x64 , and on Windows 8.1 Pro & Media Center Editions (Upgraded) x86-x64 !!! These problems also existed in Windows 8.1 Preview x86 and x64.
Address Bar (Green Loading Bar) Keeps Scrolling From Left To Right... ALL THE TIME!!!
Icons, Folders, Shortcuts take forever to load!!!
Right clicking files or folder (PROPERTIES) takes forever to show up (5-15 mins later)!!!
Anytime I add, remove, edit any file or folder, the Green Loading Bar appears and takes FOREVER to scroll from Left to Right!!!
Network devices are not showing up or takes tons of hitting Refresh/F5 to appear!!!
SkyDrive shows folders/files on Windows Side but not officially on Skydrive; via Website, SkyDrive Metro
App or SkyDrive Windows Phone App or Windows Phone Office App/Hub!!!
Windows Explorer takes forever to load icons for Favorites, SkyDrive, Homegroup, This PC, and Network on left hand panel!!!
Many, Many, Many more issues... but you get the idea... it's all WINDOWS EXPLORER related!!!
A note to Microsoft Support Agents...
PLEASE POST SUGGESTIONS/FIXES ONLINE AND NOT IN PRIVATE MESSAGES since a lot of users I see here online are having the same problems and it doesn't help the Online Community when you give out answers in PRIVATE MESSAGES!!!