I am currently looking into buying a SSD (solid state drive). I already use one for my program files but it might be help to save Muse websites to an SSD since they are a lot faster than regular drives.
If any of you save your website to an external hard drive that also slows down the the loading etc. I just wanted to share this in case you have not read or heard of it before.
When I have installed a new drive i will let you know if that solves all my problems and possibly yours.