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[RX 580] 4K HDR performance drop and video loss

Question asked by pantalaimon on Apr 30, 2018
Latest reply on Jul 24, 2018 by colesdav

This is my first time posting, and my first time I've gone team red!

So far everything is fine except output to my 4K HDR TV

 

System/Setup Specs

 

Graphics Card:

ASUS Radeon RX 580 Dual Gaming OC 8GB     DUAL-RX580-O8G  | Graphics Cards | ASUS Australia

Driver Version 18.2.1

Motherboard:

MSI B350M MORTAR ARCTIC (MS-7A37) (AM4)     Overview for B350M MORTAR ARCTIC | MSI Global

UEFI/BIOS:

Version    A.A0

Date    29/01/2018

CPU:

AMD Ryzen 5 1600

PSU:

  Enermax Revolution 87+ 1000W 80Plus Gold (It's from 2012 when I had a larger setup)

RAM:

16GB

Windows Version

10 64-bit Version 1709 All current updates installed

Displays

LG TV 65UJ752T-TB HDMI

WebOS 3.7.0-5712101 (dreadlocks2-drto)

BenQ (1920x1080) HDMI

Samsung S24A450BW (1920x1200) DVI

 

Description

When my LG TV is connected to my 580 with HDR enabled, my PC has a little heart attack. As long as the display is static, the TV operates nominally. But when 4K content is pushed to the device, Windows displays mouse lag akin to high CPU usage, the picture will display but the bottom 30% of the TV will flicker white approx every 5-7 seconds (this also interrupts the audio) and then eventually I get 'snow' on the TV before the screen goes black. Disconnecting and reconnecting the HDMI solves the issue until it happens again.

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