Best way to convert 4k to HDCP 1.4 1080p

Hey guys,

what's the best/cheapest way to split a HDCP 2.2 4k 60hz signal and then convert one of the outputs to 1080p HDCP 1.4 so I can feed a HDFury X4 with it?
Split it with this splitter and then convert the signal with ? (I am german so german amazon here for this one)

Thanks in advance. I hope you guys were facing the same problem and found out a cheap way to solve it. Maybe even a one-device-solution?

Edit:
The Gofanco splitter can already output in 1080p on one of the out-ports. So i guess a HDCP konverter that can only do YUV 4:2:0 in 4k 60hz will be able to do 1080p in YUV 4:4:4, right?

Edit 2:
OMG I just realized that HDMI 2.0 can only do YUV 4:2:0 in 10 bit HDR at 4k 60hz because max bandwidth is 28Gbps .. So actually all devices that support 18Gbps (or 4k/60hz 4:4:4 (8-bit) or 4:2:0 (10 bit)) are okay because there's nothing that could do it better before HDMI 2.1?