Barn Finds Freezing (keeps waiting)

Good day.

I was playing FH4 since yesterday and no problems except one (very annoying)

when i reach a barnfind, it calls the mechanic and…
it goes forever.
I knew about the existence of a similar glitch in FH3, I tried to fix it in that way
(set core affinity to 0 in task manager), but nothing.

I’m really frustrated, i have lots of barnfinds but i can’t manage to claim them

thanks for your help, and sorry for my not-good english.