Your "ultra-fast" Wi-Fi 7 card is probably running over an unshielded PCIe lane, and it shows
… The high-frequency switching within the VRM power phases and the unshielded high-speed traces of an adjacent PCIe 5.0 slot radiate significant electromagnetic interference. This local noise leaks directly into the unshielded traces routing to your M.2 Wi-Fi slot, muddying the signal. …