cubase 8.40 GUI is very slow on new Mac Pro

My fresh Cubase 8.40 install on a (relatively) new Mac Pro is very slow, GUI-wise.
I read somewhere that 8.40 wil be the last version of Cubase 8. Does this mean that there will be no fix for this?

I’m very content with everything else, by the way! I love Cubase. If only there were a fix for the slow GUI.

Hi, cubase have a very slow GUI on macs if you’re not using a very low resolution. Doesnt matter how good your computer is really…Hoping for a revamped gui-engine for mac.

Btw, were at 8.5.20 now

It’s not only cubase… The latest Mac OS has graphical problems all around