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Safari getting stuck on Mojave/x99

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Apr 23, 2023
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Motherboard
ZX-DU99D4 X99
CPU
2x E5-2670 v3
Graphics
RX 580
Mac
  1. MacBook Air
  2. MacBook Pro
Classic Mac
  1. Power Mac
Mobile Phone
  1. iOS
Hello! Its my first post around here...

I got a weird behaviour and Im trying to track down the cause.

I have a dual booting x99 (dual Xeon, Haswell E) hackintosh running opencore 0.9.1. Two drives one with Monterey and one with Mojave. Both are vanilla installs through opencore. On Mojave I got Safari getting stuck after a few minutes of using it (it wont load any pages after a while of using it). Other browsers (Firefox, Chrome) work fine. Booting to Monterey Safari works fine.

Now, if I move the Mojave drive to an x79 dual Xeon (Sandy Bridge EP), Safari works fine (of course, Im replacing the EFI folder with the correct one to boot each system). This led me to believe the problem is related specificly to the x99 system, either something withing the opencore config or the hardware itself. I've tryied numerous things, like patching DMAR, activating/deactivating IOMapper, patching HPET IRQ, but Safari on Mojave refuses to work correcty.

Any clues what the problem might be?

Of course, I could keep Mojave running on the x79 system and use the x99 for Monterey, but still I would like to figure out whats causing this problem...
 
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