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    How to Use PresentMon GPU Busy to Diagnose Gaming Bottlenecks

    GPU usage is the metric most of us reach for first when a game stutters and we suspect the processor. Nearly everyone has watched a 75% GPU readout in an overlay and muttered "CPU bottleneck" at the monitor. It's a reasonable instinct, but it's a blunt one. XDA Developers' Hamlin Rozario argues...