Based on this pin configuration, there's only two dedicated power pins, which isn't very good for large wattages. The rest are twinax signal pairs separated by ground to reduce crosstalk.
Usually when connectors are designed for power delivery, they'll use bigger contacts to reduce the contact resistance (signal contacts tend to be small so you can fit more of them in the same space). I'm guessing the original DP connector form factor wasn't made with such high power in mind, so it would make a lot of sense to use the spare signal pins for power delivery in this case. Running too much power through too few small pins can damage the contacts, by either by instant-welding the contact surfaces or by overheating the connector (see NVIDIA GPUs) ((also high voltages can cause arcing, which even in the best case will seriously degrade any connector)).
Take all of this with a huge grain of salt cause I just learned this stuff like a month ago, and my department has nothing to do with any of it. Just though someone might find it interesting.
Looks like the color space is being read improperly somewhere.
Not sure if this will fix your problem, but you can set the color space of an image with the ColorSync Utility (should be preinstalled on macos). Open the image (File > Open), and at the bottom of the window select Apply Profile. Try experimenting with profiles in the second drop down box to see if the problem goes away (they shouldn't change the way the image looks on your screen).
sRGB should be compatible with everything, but it's old and doesn't have a very wide gamut. For your image it should be fine though.