Slow performance on Big Sur

Marty Knapp martyknappster at
Mon Dec 14 14:14:56 EST 2020

I have a customer with a brand new Mac Pro with tons of memory (and two 49 inch curved screens!) running Big Sur and he sent a video showing slow performance when populating a half dozen text fields from a custom property - took about 3 seconds (in a standalone).


> On Dec 14, 2020, at 11:04 AM, J. Landman Gay via use-livecode <use-livecode at> wrote:
> My client is running Big Sur and says that changing cards in a stack causes a very slow, stuttering display. The background image appears in chunks and text in the fields comes in as sequential pieces. The order of the display varies, sometimes the text appears first, sometimes the background image. The first few cards are fairly normal, but as she pages through the stack it gets slower.
> I had her watch Activity Monitor and CPU usage goes up as she navigates through cards. At first the display is fairly normal but each successive card change increases CPU useage a little bit. She stopped when usage got to about 50% when she said it was unusable. This was in the IDE. She says the standalone is even slower.
> Has anyone seen this? On Mojave and Catalina everything is fine.
> -- 
> Jacqueline Landman Gay         |     jacque at
> HyperActive Software           |

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