XB10 5 GHz causes Linux Intel Wi-Fi to fall back to 54 Mbps

My XB10’s 5 GHz radio causes a Lenovo laptop running Zorin OS Pro with an Intel iwlwifi adapter to fall back to a 54 Mbps link rate. The kernel repeatedly logs:

required MCSes not supported, disabling HT

Signal strength is excellent, approximately −42 dBm. The same laptop connects normally to a phone hotspot at 144 Mbps and to the XB10’s 6 GHz BSSID at approximately 1.9–2.1 Gbps. The behavior occurs with both Linux kernels 6.17.0-20 and 6.17.0-35.

XB10 5 GHz BSSID affected: [Edited: "Personal Information"]

XB10 6 GHz BSSID working correctly: [Edited: "Personal Information"]

Locking NetworkManager to the 6 GHz BSSID resolves the problem. Please escalate this as a possible XB10 5 GHz firmware/MCS-advertisement interoperability issue.

Thanks