Zigbee Network Issues

But I have no bulbs on my mesh except for Sengleds, which are end devices. And I had one peanut plug that was jumping around from router to router like crazy. So, is that a problem or not?

Then why are the peanut plugs listed as low ram concentrators and why do they keep jumping from router to router?

Also, the reason this whole topic got brought up in the first place is that I have a repeater, an Iris plug, which i paired in place. It is showing up in the neighbor table of the hub with an LQI less than 100. Now, there are 8 other repeaters in my network, 3 of which sit between the hub and this plug. One has direct line-of-site to this plug and that plug has an LQI of 253. So, my question is, why is this outlet still trying to connect directly to the hub rather than go through another repeater. An LQI of less than 100 is a very bad thing, right? So, why is it still trying to do that? Shouldn't it try to do a 2-hop route to the hub instead of tring to go directly to it? I mean, isn't that what a "mesh" network is supposed to be able to do?