There is a bug in MS Windows that can slow up network browsing. It can take up to 30 seconds to browse remote computer. Reason of this delay is that Windows is scanning remote computer for Scheduled tasks.
There is a simple registry tweak to fix this problem.
Speed up network browsing in Windows
1. Start Registry Editor ([How to start Registry Editor->how-to-start-registry-editor-in-windows])
2. Navigate to HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/Current Version/Explorer/RemoteComputer/NameSpace/{D6277990-4C6A-11CF-8D87-00AA0060F5BF}
3. Backup {D6277990-4C6A-11CF-8D87-00AA0060F5BF} key ([Backing up part of the registry->how-to-backup-part-of-the-registry]). This way you can easily restore deleted value.
4. Right click on {D6277990-4C6A-11CF-8D87-00AA0060F5BF} key and click delete

5. Restart your computer