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What would be the fastest OS for a MAXED-OUT 2017 27-inch iMac 5k?
I have the maxed out model with 4.2 i7, 64GB of RAM, 2TB Fusion drive and 8GB Radeon Pro 580... But I'm still on High Sierra. I haven't upgraded out of fear that I would trade performance for new features and social media integrations that I'll never use, but I've been hearing that High Sierra...