windows search in xendesktop 7.6

We are running a brand new XenDesktop 7.6, environment with provisioning of applications (not desktop)  on Windows 2012R2 server OS.
Virtual machines are provisioned through Machine Creation Services. On top of the windows, we run the desktop enviroment so users get the feeling they are actually running a desktop platform.
Upon installation of XenDesktop, the software has disabled the indexing and  search services of windows as part of an Optimization of XenDesktop.
Several users are now complaining about the fact that they are not able to perform content based searches in Windows Explorer.

We could reactivate Indexing Services or Windows Search services, but we are wondering if this is not going to have a bad impact on the performance of the VM.
Citrix only mentions this on the subject: http://support.citrix.com/content/dam/supportWS/kA460000000CkwbCAC/XD_Win7_OptimizationGuide.pdf

"Indexing Services: reates an index of local and remote files to allow for faster
searching. As this information is created and stored locally,
the indexes will be destroyed upon each reboot due to the
read
-only configuration of the Provisioning services image.
That means each reboot will start with a blank index.
However, indexing can be redirected to the user’s home
directory to allow for faster searches, but at the expense of
scalability. Disabling this service results in a degraded user
experience. "

Question 1:  Is one of both services going to have an impact on the performance of the users?
Question 2: In the above article citrix  has mentioned that it is possible to redirect the index files to the user's home directory. How and where can we do this? We would like to roam this index data or store it on a redirected folder.
Is this possible using GPO?

Kind regards