Thanks Shane,
Yes, I can see that the speed results are horrible, which is why I’m looking for help – to improve them. The Specs I listed are for my iMac Mid 2011 :

I’m hoping that the issue is the iMac 2011 only has USB 2.0, and the SSD external enclosure I’m using is USB 3.0. I’m going out to buy a thunderbolt SSD today, which should help (I hope)
Thanks!