I'm no expert Aiden, but when I look at those screens, I have noticed very quick " sample " times in PHD, the top one has a 0.1 second exposure and the second graph has a 0.5 sec exposure. My understanding is that you should never be under 1 second when guiding as you "chase" the star. Have you tried between 1-3 second exposures?
I have the same guidecam, guidescope and mount and have never had it quite that bad, even when starting out.
Of course I could be completely off but worth looking into.
Goran.
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