Exactly! I faced the same problem! Unfortunately, there is no easy solution for this simple problem. I shared a solution that I implemented through Node-RED in this post:
Node-RED flow to set low current limit on AC input
Even so, it will not be trivial to use this solution, you will need to learn a little about using Node-RED, if you have never used it. You will need to install Node-RED on your system, load the flow that I shared and adjust it as necessary (for example, adjust it to your minimum AC input current value when Power Assist is enabled, if it is not 6A, which is my case).
Alternatively, you can implement a slightly simpler solution through Multiplus’ assistants (I commented on this solution in the post as well), but in this case it will be a fixed configuration, which will not automatically adjust to the current limit configured for the AC input.
The ideal would be for Victron to implement this functionality that I created with Node-RED in the devices…