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Mojave 10.14.5 Graphics problem

Joined
Apr 3, 2014
Messages
40
Motherboard
Gigabyte Z390 M Gaming
CPU
i9 9900K
Graphics
RX580
Mobile Phone
Android
Hi

I just upgraded my Graphics to Radeon RX 580 Pulse followed by the upgrade to Mojave 10.14 and all was well. I got about one third boost on my Cinebench speed which still isn't great at about 1500 but the rest of my hack is a bit long in the tooth now.

So today I upgraded to 10.14.5 which seemed to go well but on boot I noticed strips of blue pixels on the boot screens. Once booted the graphics were painfully slow so I rebooted which improved things but not a lot. I re ran Multibeast just to be sure and re-booted & whilst it seems OK I still see the blue lines on boot.

I also tried Cinebench a couple of times only to find the result is down to around 800 which is worse than with my old Nvidia card.

Can anyone help please?
 
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