Wifi antenna interference

[hardcore]

sure, but disabling in the configurator does not mean it is not actibe or powered. If it would be completely shut off it would not bring such an improvement if you remove it.

I think it's not the card itself that affects the sound, but the connectors going between the card, the antenna connection on the CI board, and the antenna on the chassis. That would be linking the ground of the chassis, to the wifi card, and the CI board. Removing that ground link seems beneficial.