I do not install any games on C:\ drive unless it is a requirement, and it is for reasons outside of Simming as Windows needs space to install updates and also for converting some space for virtual ram and if the drive is full Windows start to triage what is most essential in keeping up with what is most needed and that can lead to problems. However, one should not fill any SSD or HHD to its max, being external drives are cheaper these days and the computer means to access them are faster now, I have the Sims series on externals and have not run into problems doing so.
