We haven't heard of too many performance issues with Muse. It is possible that something in your system is leading to the slowdown. For a more comprehensive investigation, I suggest reaching out to the customer care team. contact-bumper
For me, Muse is slower than 2015 version. I finally got a new Mac last Dec. which enabled me to update to the latest version: 2017 and then 2017.2. From that time on, Muse is slow from the get-go. It launches slower with the welcome window taking a long time to appear or not at all. The cursor turns to a beachball for 5-10 seconds when opening files, saving, etc. I am working with websites with no more than 20 pages.
Same here. Mac Pro 2x 6-Core 3.46GHz with 32GB RAM with Dual-SSD(!!) and Muse needs 8 secs to start and every is jerky. Very very bad. Feels like on a old-school-computer. Every other program runs fast as it should!
BTW: Files are local and not big!
And this problem is since years and Adobe is wondering why so many customers say good bye!?
Tell me: Shall I look for some other threads and let you know, that there are even more opportunities to post your issue?
Old MBP early 2011-Muse pretty fast–