If you are experiencing delays when accessing files across a DFS network, enable the new heuristic changes (these two entries not needed for 3.6+ as they enabled by default) by adding / modifying the following in the cfg.ini using this
KB:
SkipNetworkConversionToPhysical=0
OnlyAttemptDFSForPhysicalDeviceNames=1
Alternatively if a DFS file share stops functioning you can force DFS normalization by adding:
NormalizeAlwaysDFSPatterns=<path to server>
example: NormalizeAlwaysDFSPatterns=**servername**
Of if a non-DFS file share that is experiencing delays specify an ignore path to the server by adding:
NormalizeNeverDFSPatterns:<path to server>
example: NormalizeNeverDFSPatterns=**servername**