OpenCore boot failure: allocationg pages at ... alloc type 2

I'm trying OpenCore on a Ryzen 5 2600, MSI B450 Tomahawk, RX 590 system.

I followed the OpenCore vanilla desktop guide, but get stuck with this boot error:

OCSMC: SmcReadValue Key 4D535463 Size 1

OCSMC: SmcReadValue Key 4D534163 Size 2

I have tried the following combinations: (though I couldn't figure out how to launch the efi command to test for the KASLR values to calculate slide values, so I tried the common ones)

1)

ProvideCustomSlide = True

EnableSafeModeSlide = True

arg: slide= 0

2)

ProvideCustomSlide = false

EnableSafeModeSlide = True

3)

ProvideCustomSlide = false

EnableSafeModeSlide = false

4)

ProvideCustomSlide = true

EnableSafeModeSlide = false

5)

ProvideCustomSlide = true

EnableSafeModeSlide = false

args: slide = 0

6)

ProvideCustomSlide = true

EnableSafeModeSlide = false

args: slide = 8

Can anyone please help how to fix this.