tl;dr I think my supervisor has a severe lack of knowledge, does too many things instead of focusing heavily on just a few things and hence I can't really focus on my research project.
Long Story I started my PhD a few months back and was hired specifically to work on a certain project. We have a few very outstanding research groups as collaborating teams but all in different research areas.
After a few weeks into my PhD, I was hit by all the different side projects my supervisor tries to kick off. They are extremely time consuming and not research related at all. Besides, I noticed that my supervisor has a severe lack of knowledge in one of our core research areas. As a consequence, I can't discuss any of my ideas with him. As the other PhD students feel the same way, we have mentioned the lack of time quite a few times in our group meetings. And although he agreed that we need more time on proper research, things didn't really change yet. As a consequence, my motivation for the project starts to decline, although I continue to be extremely passionate about the project's overall goals!
So my question is, how I should cope with this situation? I thought about leaving his group, but I'm kind of stuck in a dilemma: I'd love to work on the project, and I don't want to let my collaborating teams down.