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Help needed: Mojave strangles VEGA 56

Joined
Aug 21, 2018
Messages
3
Motherboard
MSI Z370M Mortar
CPU
i7-8700K OC 4.8Ghz
Graphics
Vega 56
Hi,

I recently updated from High Sierra 10.13.1 To Mojave 10.14.0. Everything works fine except the GPU, it's somehow strangled and performs worse than before. Geek Bench seems to indicate that part of the problem is driver based, as it shows difference in maximum memory frequency, see attached pics.

Vega56 High Sierra Imac 18,3 SMBIOS.pngVega56 BIOS iMac 18,3 SMBIOS.png

That's a 15% drop. Any ideas how to remedy it? I'm lost here, as the drivers are Apple-provided with the OS. I'm using Lilu, Whatevergreen & VegaTab_56 kexts (although VegaTab doesn't show up under kextstat in terminal, kext in attached file).

Grateful for help! Also thanks a lot for all the valuable information on this site, without the likes of Rehabman, pastrychef, mooner, iPeg, AquaMac, MESwan etc. I would still be lost with my Mac Pro case mod hack.
 

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