So I am a HUGE sims fan. I LOVE the Sims 3, and play it way more than Sims 4. However, with the new Cats and Dogs expansion coming to Sims 4, I would like to be able to reinstall Sims 4 and play it, but still be able to just play Sims 3 whenever I want. My laptop runs Sims 3 at the moment with 339GB free hard drive disk space. Would Sims 3 still run well if I reinstalled Sims 4? (I believe Sims 4 is around 13GB) Would there be any noticeable decrease in the Sims 3 performance? And obviously I wouldn't run both games at the same time. Any help is appreciated.