I don’t know what it is, but when Battle.net is running, even when minimized to taskbar, the idle CPU usage jumps from average of 15 watts to 35 watts and all my P-Cores (i9-13900K) are hitting their high boost clocks constantly.
When I minimize it to the system tray, power usage drops a little but still idling at 25-30 watts.
When I close it, they start idling at low speeds (~800-1000 MHz) and power usage drops to 15-18 watt range.
Steam doesn’t have this effect. I’ve had Steam, Hwinfo64 and other things running minimized without battle.net and nothing else used this much power.
I tried both Standard and Beta versions, same thing. I actually manually assigned affinity of the open battle.net processes to the E-Cores only and that also didn’t change anything.