You'll see a decrease in load times, that's about all. The only reason I switched to an SSD when mine failed was to ensure it wouldn't fail again, no moving parts in an SSD. Mine is only 250gb, I play all my games off of a 2tb external hdd. I get the benefit of the PS4 booting faster and the dashboard running smoother. I used to move games between the external and ssd, but the only improvement was load times, didn't improve stutter or anything, so wasn't worth it. I would not advocate a 250GB internal unless you plan to use an external for game storage. The PS4 had an annoying habit of creating a copy of a game when it downloads a patch, it then applies the patch and deletes the original copy. Doesn't sound like a big deal, but RDR2 at 112GB would need another 112GB of free space and then whatever size the patch is added on top, so you won't have enough free space to download the patch. I knew that going in though, I went SSD for the longevity and planned to play from my external HDD anyway.