I dont know what display quirks you mean. It is fine. But yes youll need a Fosmon DP to HDMI cable as this is the only one that works correctly $9 on amazon. Or like you said upgrade the amp so u can passthrough 4k60. I did the former as 9 bucks was better than hundreds on a new receiver.
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3700X - RTX2070 - 970EVO - EVGA Supernova 750W Gold - Sony KD55X720E
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