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After the Big Sur update on my MacBook 12 2015 the performance dropped very hard. When I inspect Activity Monitor I see that WindowServer is using most of the cpu. It is even worse when I use an external mouse than the trackpad.
MacBook, macOS 11.0
Hi there Latrodectus12,
Thanks for reaching out to Apple Support Communities. It sounds like you are concerned with your Mac performance since updating to macOS Big Sur. This article should help you resolve this issue: If your Mac runs slowly.
We hope this helps!
Big Sur update bad performance and WindowServer extreme cpu usage
