The Dell AW3225QF works well with macOS. The max refresh rate with a DisplayPort connection is 120Hz, but you can get the max 240Hz refresh rate with an HDMI 2.1 connection with the macOS firmware updated to Sonoma 14.4.1 or newer. If you use an older Mac limited to HDMI 2.0 bandwidth, the max refresh rate is 60Hz, and it doesn't support VRR.