Matlab on M1 gets really slow on entering debugging mode

Hi,

I'm running Matlab 2021a on a MacbookAir with a M1 chip. A bug-free code runs at a decent speed and without problems but as soon as I get an error, Matlab gets really slow. I usually get a notification sound for a bug first but have to wait another 10sec or so until the actual error message appears. In this time I can't interact with any other part of the interface. Interacting with the code after that is also not possible and sometimes takes a minute or more until it is. This seems to be worse if a plot is involved.

Does anyone else have this issue?

I checked CPU and RAM usage and both are never at high levels during this time.

Answer 1

[Ananya Tewari]

Hello,

With the new MacOS 11.4, we have discovered an issue with slow start times and sluggish interaction when launching MATLAB from the Dock or Finder. As a workaround for this issue, you may start MATLAB through the terminal.

Please refer to this answer for more details and updates.

[Timotheus Berg]

Thanks this seems to have resolved the issue!