How to get the best resolution out of your HDMI splitters (Echo HDMI downscaler) - YouTube
Buy 4K HDMI Splitter 1x2 HDR D-o-l-b-y Vision Atmos Down Scaler - HDMI Scaler 4K 1080P Sync,4K 60Hz 4:4:4 HDMI Splitter 1 in 2 Out HDCP2.2, EDID 4K5.1/4K7.1/ Copy, for Game Xbox
Amazon.com: 4K@60Hz/1080p@120Hz HDMI 2.0 Splitter 1 in 2 Out, Auto Downscaler with HDR10 &3D, 18Gbps Zero Latency, AV Access Gaming Splitter, Duplicate/Mirror Screens, HDCP 2.2, for Xbox, PS5 : Electronics
4-Port HDMI 2.0 HDR Splitter with EDID & Downscaler
4K@60Hz/1080p@120Hz HDMI 2.0 Splitter 1 in 4 Out, Auto Downscaler with HDR10 &3D, 18Gbps Zero Latency, AV Access Gaming Splitter, Duplicate/Mirror Screens, HDCP 2.2, for Xbox PS5 : Electronics
XOLORspace S102 1 in 2 out 4K 60hz HDR HDMI splitter with downscaler