What are the stats on your machine ?
SSD is all good and well but if the processing power isn't there it won't change that much.
Is it only with that ASM or do you have it in general?
How intricate is the ASM, could it be that the way things are built up in the ASM is causing for a slow down?
Try this while in the ASM
go to the tab Evaluate and select assembly visualization, on the far right you'll have Mass with a little arrow next to it
click the arrow and add a colomn
select the new colomn and change it to "More", a new window will open and select SW-Rebuild Time
Now you'll have a quick way to see what part, if any, is causing the slowness.