Installing Big Sur on Ivy Bridge Xeon E5-2620 v2, chinese x79 motherboard

So i'm curently running Catalina on this PC. Here are the specs:
  • CPU: Intel® Xeon® E5-2620 v2 - 6 cores 12 threads - 2.1Ghz - 2.4Ghz.
  • GPU: Nvidia GeForce GT 740 1GB (GK107-425-A2 Kepler platform).
  • RAM: 16GB (4x4GB) 1066 Mhz ECC DDR3.
  • Motherboard/Laptop Make and Model: Essenc X79G v1.3.
  • Audio Codec: Azalia HD Audio / C600/X79 series chipset High Definition Audio Controller
  • Ethernet Card: Realtek RTL8111.
  • BT Card: CSR 4.0 Bluetooth USB card (Qualcomm/Cambridge Silicon Radio CSR8510).
  • BIOS: X79G00E - Aptio Setup Utility Version 2.15.1236.
  • NVME: ADATA Falcon 256GB.

Now I want to install Big Sur...but I'm completely lost on how to configure OpenCore or Clover for my PC. Itried Dortania guide several times. And I always get stucked at "[EB|LOG:EXITBS:START]". Then I tried the Clover EFI you provide here for x79 and the result is almos the same, only this time I get stucked at the line of plus signs. It does not boots the BigSur installer nor the working Catalina installation.

So I first I tried OpenCore, and got stuckd at "[EB|LOG:EXITBS:START]"

Then I tried Clover from here, and got stucked at the plus sign line.

Honestly, I don't know what else to do. I'm completely lost. I don't even remember how many times I tried things I found on the web...but seems that none ver tried to install Big Sur on a CPU like mine. I think the problem has to do with the SSDT...but I have no idea how to make one, and the technical documenttion is beyond my comprehension.

-OpenCore Vanilla Guide

-Clover Vanilla Guide