I tried about 8 different HDMI 2.0 cables from amazon and they are not all created equally. I ultimately just said screw it and bought the Atomos ones too for peace of mind. I have had the below cables work for me:

https://www.amazon.com/gp/product/B00QV6Y19S/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B00DRMV10Q/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B01IUGNT30/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

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These work but die easily from twisting / bending:

https://www.amazon.com/gp/product/B017E85JRE/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1