You have decent internet in theory, at least to your ISP’s relays but of course your location relative to the MSFS servers and whatever’s in between is the question. If it really is the problem you should be getting good performance at least some of the time.
But no I don’t think that’s it, gpu at 50%, cpu at 100% tells it’s own story not least that 30-35fps in the cruise leaves absolutely no headroom for heavy scenery, you really need to up that to 40 plus. Also search these boards for the shader cache fix which should help at touch down.
Also those Omens are so tightly packed that you possibly have heat issues and are being throttled under high load