The more that Max dug into the structural design, the more small tweaks that [Optimize] found. The System Function actually only worked to optimize the Mecha for him, but in a setting where it was all structure, there was no way that he would make it worse for others by optimizing it for himself.
So, he identified the issues one at a time, and then optimized the area and updated it in the virtual design. Then he would move on to the next area and do the same until he had every issue that optimized found with the Mecha tweaked.
Then came the real annoyance. He had to build and replace all those areas of the Mecha and get the whole thing working again so that he could run the next round of [Optimize] looking for new conflicts and negative interactions.