I'm working on a brand new 2018 rMBP with 32Gb of memory and the IDE is painfully slow. It takes several seconds to draw controls on the windows, etc.
Please do a search on this forum for threads named like yours.
There is a problem with Mojave and GroupBoxes currently, but in some cases there seem to be different causes for IDE slowdowns on a Mac which usually was the fastest IDE platform.
Thanks for the suggestions! I will try using Windows 10, but the main reason for us to go with Xojo was to get away from Windows.
I did do a search on the topic before posting and it seemed that many of the issues were with other versions. That is why I started one with 2018r4. Again, thanks for the help!
Hope we can resolve this issue.
I went back to 2017r3. With 2018r2 , I was getting a weird crash error when closing out the applications. On the Mac the application would throw an error, while in the windows environment a process would be left running rogue which really cause some problems in the server environment. Although 2018r4 solved the crashing error, the IDE is painfully slow to work with. Which is why I chose to go back to 2017r3.