The only reason I'd ever consider playing this game would be to find out the fates of my beloved NPC's but seeing as how there's something called Wikipedia I see no point in paying a monthly fee for something that is undoubtedly going to disappoint.
I think that happens because at that point you're supposed to see a cutscene take place in the core. Try lowering all the graphic settings temporarily until after you've successfully landed on Malachor.