I've just seen that in Fallout4Custom.ini, there was (it seems new)
[Archive]
bInvalidateOlderFiles=0
sResourceDataDirsFinal=STRINGS/I usually paste the needed lines at the end of the ini so I didn't see there were lines to edit. Here is the correct text for reference.
[Archive]
bInvalidateOlderFiles=1
sResourceDataDirsFinal=Hope it'll work for you ^^