Shaper settings

I have enabled shaper with the following settings:


It seems to work ok but I have a question on whether it is good for car or the charger to constantly drop the power so often:

The problem is my mqtt live load message comes in every couple of seconds and I cannot increase the frequency (coming from Shelly EM)
I tried setting the minimum pause time to 300s as above but it doesn’t seem to make any difference.
Any suggestions?