I have exactly the same problem, since I installed MAC OS Big Sur, my computer ; MacBook Air (13-inch, Early 2015), 1.6 GHz Dual-Core Intel Core i5, 4 GB 1600 MHz DDR3, became very very slow, and this is just so inconvenient and annoying. I'm passing my exams remotely, and this situation is so stressful.
BrahimCherif
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