WiFi is extremely slow only on my PC

[Windows 11]

I have a HP Pavilion Desktop Pc with a Realtek PCIe RTL8821CE 802.11ac PCIe Adapter. My download speeds are sometimes ~0.2 Mbps, ~5-10 Mbps, or sometimes it doesn’t connect to the internet at all, with upload speeds of around 1-3 Mbps. For comparison my iPhone, in the same place, has a download and upload speed of 150-300 Mbps.I have found that, sometimes but not always, some seemingly random combination of turning on and off the WiFi and disconnecting can turn my download and upload speeds to over 100 Mbps, but this usually stops if my hibernates and goes into sleep mode, or 100% ends if I tu

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