Please try the following workarounds and see if any of them help resolve the issue:
Click "Preferences" in the Home tab of the MATLAB Desktop and then go to MATLAB -> General -> Source Control and select "None" and Click "OK". Please restart MATLAB and see if the issue still persists.
Does MATLAB open when you try to open it? Can you run any commands in MATLAB Command Window? If so, please try the following command in MATLAB Command Window and then restart MATLAB and see if it is still slow:
If that doesn't work, could you please try the following steps and see if your MATLAB is still slow?
Please try (a) regenerating preferences, (b) restoring MATLAB to default paths and (c) rehashing toolboxcache:
a) How do I regenerate my MATLAB preferences?
b) Restore search path to factory-installed state.
Before modifying the search path, you can take a backup of your 'pathdef.m' file, which can be located by using the command in MATLAB Command Window
Before proceeding, you should backup this file by copying it to a folder outside of your MATLAB path. After making the backup, please execute the following commands in the MATLAB Command Window to restore the default MATLAB search path.
c) In MATLAB Command Window, execute the following command:
For more information about the above command, please take a look at the following link:
d) After the above steps, please use MATLAB normally to see if the issue occurs again. If the issue is resolved, then you can save the new MATLAB search path by executing the following command:
Hope this helps.