Invictusblade

I am having a similar issue to you and i have no idea what is causing the real problem. in fact i went here to find out other peoples opinions. so after an exhaustive testing to find the problem, i came across the same issues but with different mods and then i started running procmon to look for issues and found this in the logs. for some reason, it is trying to look for loose sounds files in \Fallout 4\Data\Data\sound

I am having a similar issue to you and i have no idea what is causing the real problem. in fact i went here to find out other peoples opinions. the easy way to find out if we have the same problem is to rename(NOT REMOVE) your sound folder inside Fallout 4's Data folder. (btw I found this after i exhausted my list of tests) for example sound to sound_2