Jeez, sorry for the spam. It turned out that SimplyKnock is broken and has corrupted .dll files. (as people point out https://www.nexusmods.com/skyrimspecialedition/mods/14098?tab=posts). It can be fixed though so not that bad, except for a plenty of lost time
I also tried with SSEEdit but it didn't show anything particular. How do i get to know what's wrong in this case? I double checked for compatibility patches but not sure if the load order by LOOT is valid. For the record here is my plugin list: Hope it helps cuz it's really weird for me