Error while loading repository workspace in RTC 6.0.1 VS 2013 clients

When I try to load a workspace which has 100+ components I get this error

CRRTC8500E: Server Error: Can not create sandbox at given location. Invalid URI: The Uri string is too long

Exception type:

com.ibm.team.foundation.core.exception.CoreException

Exception message:

Can not create sandbox at given location.

Inner exception:

System.UriFormatException: Invalid URI: The Uri string is too long.

   at com.ibm.team.foundation.service.WebRequestInvocationProxy.Invoke(IMessage myIMessage) in c:\RTC_BUILDS\I6.0.1_20151106-1439\Foundation\ServiceInterfaceProxy\WebRequestInvocationProxy.cs:line 122

   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)

   at com.ibm.team.filesystem.service.rest.IFilesystemRestClient.getLoadCFA(ParmsLoad parms, IProgressMonitor progress)

   at com.ibm.team.filesystem.client.FilesystemClient.ValidateLoadWorkspace(String copyFileArea, ITeamRepository repository, String workspaceItemId, FoldersInComponent[] foldersToLoad, IProgressMonitor monitor) in c:\RTC_BUILDS\I6.0.1_20151106-1439\Filesystem\FilesystemClient\FilesystemClient.cs:line 4419

   at com.ibm.team.scm.ui.wizards.loadrepositoryworkspace.LoadValidator_VS.RunOperation(Object arg, IProgressMonitor monitor) in c:\RTC_BUILDS\I6.0.1_20151106-1439\SCM\ScmUILibrary_VS\wizards\loadrepositoryworkspace\VisualStudioScmClientLoadHelper.cs:line 122

the Sandbox location is C:\temp\vs on my local disk.

I am trying the option "load components as root folders"

How can we rectify this?

Thank you