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Camera-wave photo test on VG248QE GSYNC.
Using the TFTCentral PWM test method, the ASUS VG248QE has become PWM-free through the G-SYNC upgrade. (PWM is pulse-width modulation, is a method of brightness adjustment).
G-SYNC monitors probably needs to be PWM-free in order to prevent variable PWM artifacts from occurring during variable refresh rate operation.
The test findings can be found in this Mark Rejhon post in Blur Busters Forums.
