I have three computers, two running Mojave with no problems and one new macbook pro with Big Sur. The internet speeds on the Big Sur computer are ~8Mbps while on the others ~100Mbps. The router is new, other devices are fine, just the macbook. I reinstalled the OS and did all the checking and troubleshooting advised on other message boards, but still no solution. I don't have a VPN, etc. I'm at a complete loss. Has anyone else been able to solve this issue?
nevincohen
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