Hello JimHicks200282,
I worked with "old" macbook pro 2015 with Catalina with AC24 without any slow loadings.
Now I work with the same computer with BigSur always without slow loadings.
My configuration :
MacBook Pro (Retina 13 pouces, début 2015)
MacOS 11.2.3 (20D91)
2,9 GHz Intel Core i5 double cœur
16 Go 1867 MHz DDR3
Intel Iris Graphics 6100 1536 Mo
What about yours and what about your Archicad 24 version ?
Archicad 24 3022
Archicad 24 4007
Archicad 24 4018
Archicad 24 5000
Archicad 24 5004
Christophe - FRANCEArchicad Designer and Teacher
Archicad 15 to 27 FRA FULL
OS 11.6 Big Sur - MacBook Pro 2017 - 16Go RAM
"Quality is never an accident ; it's always the result of an intelligent effort" John Ruskin