I'm having this issue in Vanilla 0.15.14.

I can't seem to reliably reproduce it.

When I can reproduce it's when:
1) place decider combinator down
2) connect red-in from one network
3) connect green-out to another network
4) set signals

It crashes when selecting the tab. It appears to be more ...

That's an interesting point.

So you're saying, in this case, even though adding the dependency only adds an additional box (i.e. all dependencies of advanced electronics 2 are implicit dependencies of power armor) that it would be silly to add advanced electronics 2 as a dependency (implicit or ...

Power Armor can be researched before Advanced Electronics 2. However you need 40 processing units before you can build power armor.

I have a similar issue. I found that the stuttering most improved when I set "Video memory usage" to "All" in the graphics option tab. I also changed "Normal" sprite resolution to "High" at the same time (might be affected, but I assume this would make performance worse).

EDIT: doesn't seem to ...