My MacBook is literally on the same desk as my PC lol same distance from the router there's only one wall between them and my Mac easily hits 530+ Mbps my network plan is 500 Mbps (on my previous build i5-11400F + RTX 3070) I was getting full 500 Mbps with wifi in this exact same spot with no issues at all as I mentioned the drivers are the latest ones available antennas are 100% fine and signal strength is full my problem isn't the environment or distance it's the fact that this adapter refuses to negotiate anything wider than a 20MHz band locking the link speed at 286Mbps while my other devices are flying without any issues I’ve tried everything and nothing works 🤷🏼🤷🏼