I edited the BIOS for the Z690 Dark to enable Intel Dynamic Tuning Technology in the BIOS, and therefore Intel APO or Application Performance Optimization with 14900K for BIOS version 2.13. As it stands, this is not available in the default BIOS and therefore you cannot enable APO or use the required DTT driver. I used the Asrock Z790 Nova Intel DTT driver as all mobos are using a generic Intel driver package so can be cross installed.
https://imgur.com/iSJMx2Z I tested Metro Exodus Enhanced Edition, and it's working 100% like my Z790 Apex with 14900K.
APO ON: - Average Framerate (99th percentile): 176.03
- Max. Framerate (99th percentile): 272.78
- Min. Framerate (99th percentile): 97.92
APO OFF: - Average Framerate (99th percentile): 150.81
- Max. Framerate (99th percentile): 231.70
- Min. Framerate (99th percentile): 94.0
Works a charm! Apparently were going to have to fix these issue ourselves going forward with EVGA completely MIA. Thankfully it appears we can at least fix some of the issues and get the big stuff working. I'm going to try and get the newest Microcodes added to the BIOS and flashable without brick like this fix. Unfortunately I am learning as I go and really have to rely on other peoples guides. Hopefully I can get it figured out.