UGREEN 4K@60Hz Bidirectional HDMI to Displayport Cable Male to Male Adapter DP 1.2, HDCP 2.2, HDMI 1.4 4K@30Hz with USB Powered Compatible with Laptops, PC, Switch 2/PS5/Xbox/AMD/NVIDIA/Monitor, 6.6FT

Get this adapter. UGREEN Active Bidirectional HDMI to DisplayPortThe Index can be very, very picky when it comes to video over Thunderbolt/USB C. Think of it this way. You have your USB C port and it’s rated to video output. It can only do so much before it taps out and starts messing up the signal. That’s why GPU’s have encoders and compressors built in, because it basically “shrinks” the signal into something manageable for the outbound cable and the inbound device to uncompress and be stable.