A configuração usei da digitalfoundry
Existe uma diferença entre ativar e funcionar, como acontece no slim/phat, e ter uma performance boa.
Hdmi 1.4 não suporta hdr, fato
"High dynamic range displays require just as much data throughput for so much color and luminosity data. The two leading HDR specs, HDR-10 and Dolby Vision, require no less than an "HDMI 2.0a" spec, which supplants the higher-bandwidth requirements of 2.0 with "additional metadata" required to enable the transmission/reception of such HDR content. There is no HDMI "1.4a" to offer the same boosts to HDR-ready 1080p displays. To ride the HDR train, your device better be rated HDMI 2.0a, or you're getting kicked off."
"On October 5, 2015 - HDMI Licensing, LLC announced[81] the Premium HDMI Cable Certification for HDMI 2.0. This is an enhanced cable testing, authentication and verification program to ensure they support the full 18 Gbit/s bandwidth from the HDMI 2.0b specification plus an EMI test to ensure cables minimize interference with wireless signals. This ensures that HDMI cables support 4K/UHD products that may include features such as 4K UHD 60fps, BT.2020 and HDR."
"HDMI cables are just a dumb pipe. They don't care (to an extent) what you send through them. There is no such thing as an "HDR HDMI" cable or an "HDMI 2.0" cable. That second one is important. HDMI cables don't have version numbers. The connections have version numbers. So your TV might be "HDMI 2.0a" (and indeed needs to be for HDR), but the cable you plug into it doesn't have a number. It's just an HDMI cable"
Então seu ps4 slim NÃO RODA HDR.
Você não viu essa diferença pois não estava com hdr verdadeiro. Aqui no TLOU também "reconheceu" e "ativou" o hdr,mas era fake. Mesmo papo daquelas tvs de 960hz. Tudo fake, pois não passam de 60hz ou 120hz ( na realidade é emulado )