Why is my internet slow on my PC, but not on any other device in my home?

[Windows 11]

I've just gotten 2000 mbps internet from my internet provider done today, its working good, every device is 500-2000 mbps. My pc for some reason is 1-40 mbps. Its downstairs from where my wifi router is set up, connecting via ethernet cable is impossible otherwise I would've tried that already. my wifi adapter on my pc is up to date in drivers its an Intel Dual Band Wireless-AC 3168. Ive tried setting the value to 5GHz 802.11a on property 802.11a/b/g Wireless Mode and it just got slower to 1-3 mbps, but when i put it back to Dual Band 802.11a/b/g it barely jumps up to a meager 20-40 mbps. I've

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