Hi,
I am also finding Live 10.0.5 to be slow on my following machines -
Mac pro
Macbook pro 10.13.6
I have a lot of RAM, SSD drives in both, i just don't get it. When i try to flick thru presets on some plugins i get a noticeable lag. The audio is ok but everything on screen freezes for up to 10 seconds.
Also, when i load ableton up, i get the spinning wheel for about 15 seconds before i can do anything.
Very disappointed in this version of Live, it was a waste of time and money upgrading. Live 9 is fine.