Cloning to new surface slows down PC

[Krayna]

Hi not sure if this is the right forum for my query...
I have a refurbished Surface Pro from Microsoft which I received as exchange for my original Surface Pro which stopped charging.
I cloned the original one to my new machine but it is running very slow. Not sure if this is definitely due to cloning or a problem with the machine.
Microsoft agreed to replace it but I am doubtful if cloning it is a good idea or stick to re-installing all software. However there are some important work settings which will be lost in process, so would prefer to avoid.
Anyone know of any more ideas on this topic. Have not found much on Google...
Take care

 

[sharpuser]

Make sure you are not just experiencing OneDrive re-syncing all your files on the Cloud. To check, disable any Internet connection and see if speed improves.

 

[Krayna]

Onedrive is disabled still experiencing issues.
A major issue is booting the machine - takes several minutes when it should take couple of seconds.