Help: LG 5K monitor does not power up randomly

Hi Everyone, this has been puzzles me for a while, I would really appreciate if you can help me for following problem:
I am using a AMD Radeon pro WX7100 with 4 display ports to drive two 5K monitors, LG 5K and Dell UP2715K. LG 5K is connected to the thunderbolt EX4 card with 2 DP IN to the WX7100. Dell monitor is connected to rest of the 2 display ports. Below is my system specs:

My motherboard is Asus ROG Z790-A WIFI D4

CPU: Intel 13600K

RAM: 32GB

Thunderbolt AIC: Thunderbolt EX4 with NVM 31 firmware

when I use BIOS version 1801, under MacOS, LG 5K can be detected all the time with camera and audio working properly. but in windows, it did not work properly with the dell monitor(detect as 2 monitor), also LG monitors camera and audio is not detected.

then I updated the BIOS to the newest version 3001, I found the thunderbolt menu in BIOS is changed, under windows everything works perfectly! however, when I boot into MacOS (Ventura 13.7.8), the LG 5K monitor is not detected sometimes, regardless of cold boot or restart.
but when it is detected in MacOS, it is working beautifully, it's about 50-50 chance of the thunderbolt display being detected in MacOS.
it is even interesting that sometimes the LG 5K can even show the apple progress bar when it is booting but once it loads to the MacOS, it just become not detected and black screen.

I have tried move to Sonoma and Sequoia, same symptom - the LG 5K thunderbolt display is not detected half of the time regardless of cold boot and restart.

I have been troubleshooting for quite sometime, including using different OS, different SSDT for thunderbolt, different kexts, USB remapping, I just could not get the LG 5K display detected all the time.

Thank you so much and I really appreciate your help!

submitted by /u/Any-Mastodon2942
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