Just received the Monoprice DynamicView Ultra 8K HDMI Cable - 1.5 Feet - Black | High Speed, 48Gbps, Dynamic HDR, eARC. Tested 4K 60p on Ninja V. Recorded 37 minutes today and it worked great. Only $10
https://www.amazon.com/Monoprice-DynamicView-Ultra-HDMI-Cable/dp/B07K7YQN32/ref=sr_1_1?s=electronics&ie=UTF8&qid=1543464517&sr=1-1&keywords=Monoprice+DynamicView+Ultra+8K+HDMI+Cable+-+1.5+Feet+-+Black+|+High+Speed%2C+48Gbps%2C+Dynamic+HDR%2C+eARC