I think the key to replicating the issue is to set the OLED Brightness to Dim. I completed these steps to replicate the issue:
1. Reset - all profiles
2. Power cycle
3. External OLED - On
4. Flip OLED Display - On
5. DB15 Navigation - On
6. OLED Brightness - Dim
7. Save & Exit
8. Power cycle...
I noticed something odd with the external OLED on my RECO V5.1. I turned on the "Flip OLED Display" setting and saved to Profile 1. The OLED displays in the correct orientation for me:
However, when I power off the cab and power it on again, the text on the OLED is displayed is reverse order...
I just did a quick play of World Heroes on my DS cart up to the stage in your video. The sprites look stable for me. I couldn't reproduce the glitch in your video.
This reminds me of another discussion about sync issues on the bvm d14 with different versions of the HAS:
https://www.arcade-projects.com/threads/bvm-d14h5u-with-has-v4-2-with-cps2-or-3.28823/
Unfortunately, I don't have the bvm d14 any longer
I tested the two cables in addition to a cable from another vendor. I used a Coregrafx, Mcthulu chip, Arthrimus Mcthulu ez upgrade pcb, Arthrimus console jammaizer 2, and my arcade cabinet. I tested with Street Fighter 2 in normal 2-button mode.
The two cables from @Joko3 did not work...