BE 2014 Slow Hyper -V Incremental Back ups

Hi All

There seems to be a lot of threads regarding this problem, however i've not found a difinitive solution.

Environment

Physical Backup Server - BE 2014, OS Windows 2008 R2 - Fully patched, 16GB RAM, 2 x 6 Core CPU's, backing up a mixture of physical and Hyper-V Virtual Windows servers running Windows 2008/2012.

We have recently upgraded to Backup Exec 2014, and it seems that our Hyper-V incremental backups run extremly slow. At around 200 MB/M.  I understand that if I enable Microsoft incremental backups I need to upgrade my server to 2012 to get GRT backups.  But i've not read anything that says this resolves the issue, and may impact on servers performance due to a snapshot always running.

Any help would be great.

Thanks

Paul.