Tried pretty much everything that’s been suggested at this point.
Deleted my character from the console, went into Tannis’ lab and clicked the hell out of the slab in there, double checked to see if I just happened to miss one, still the same thing.
I’m at 40/30 eridian writings and nothing’s happened so far with the achievement.
Friend who I’ve been running through coop with got his achievement for the slabs but then when we ran through to get all named locations, he never got his achievement but I got mine.
We both have 103% of the galaxy completed but the achievements are buggy as hell.
Anyone know of any fixes?