Hmm, for some reason I thought you were using SKSE already. You don't need it if you don't care to use the in game config for Open Cities, but it's required for many other great mods and has the .ini with the memory patch if you add the lines I posted above. SKSE link: http://skse.silverlock.org/ v1.7.3 . I use the, install via Steam option, But you can install it manually too. Once installed you will find the SKSE .ini file here: Steam/steamapps/common/skyrim/data/SKSE The memory patch is the single best thing you can do to stabilize your game. If you you're not comfortable with the idea of using SKSE yet here's a mod with the memory patch: https://www.nexusmods.com/skyrim/mods/50305