Ah, so in fact the power state bug was not fixed in your case. Which more or less only happens when you connect a third screen and two of those screens are 1440p@144Hz.
I have 1x165Hz + 3x60Hz @1080p. I suppose this is still within the realms of some 4k bandwidth limit of a single screen as far as the chipset is internally concerned. So there is no good reason for this to consume much power. But for you this does not hold true … it shouldn’t result in your problem either way though.
I mean, just look at how the card draws the same excessive power for 2 screens, 3 screens and 4 screens all the same way. It really looks like some engineer was lazy, and simply made two different modes in the chip. First it tries to detect if no more than one screen is present, and then if this is not true, it skips the check and just activates all the resources for the max amount of screens possible. I can imagine the same is true if the bandwidth required reaches a certain threshold, let’s say more than a single 8k screen. Then by design of the chip, it has to just go full on out as well, and activate all resources, and draws like 100W idle. If this is really just bad cheapo engineering at it’s finest, then there may be no way to fix your problem. But who knows.