Extremely Slow Cloning performace (Build 6525)

First, let me say I've used this product since version 2011 and have 3 have purchased 3-5 copies each depending on the number of systems I've owned at any given time.

I use this product to keep stable clones just in case there's a problem because I truly despise re-installing everything.

Over the past 4 years I'll generated numerous clones using internal SATA to SATA, SATA to USB, SATA to eSATA, USB to USB and never have I seen such poor performance as I've seen with this 2015 version.

Because of issues encountered with running the cloning process from within Windows I always use a Bootable USB stick to initiate the process.

My latest attempt to clone was SATA to SATA using the internal SATA connections on an MSI GT70 2PE laptop. I previously tried a SATA to USB clone and it was sat for 6 hours before getting an error.

Cloning 310GB took so long I just went to sleep and checked it in the morning.

Cloning 310GB used to take 20 mins to just over an hour depending on the drive connection used.

Is there something wrong with this version or does it not work well with this laptop?

Cheers,