A lot of trouble and it seems like my game is now laggy. I have a ton of CC and have had to put everything through the Sims 4 Studio, and the whole process is putting a bunch of files on my PC and I'm running out of space while I work through it. I've gone into the game several times with the files I've just batch fixed and it seems laggy, with Sims not moving smoothly. I also had all of my CC merged based on type and I'm not sure I can trust the batch fix with such large packages...so I've been BFing by backup packages and then having to repackage. I'll keep going but right now, not so happy.
