Game crashes after 5-10 minutes of play.

@Izatea   First your c drive is not only for Windows but also for applications that create and use temp files will be created on the system drive (boot device or c drive). There are many things that use the free space on the system drive such as the page file. This is for use by virtual memory. There are many buffers so the cpu can move data around. One important buffer is the stack. When you open a file to edit, a copy is made (usually). Data is written to ssd just like it was a conventional hard drive. When you download a file, that file is written to a temp location on the system drive. When the download is complete that file is then copied (not moved) to the target destination. The original file may or may not get deleted right away (if ever). While many files are small there is a minimum file file created on the storage device. This is just a fraction of what happens. When you play the Sims games, as you progress this data needs to be added to the game data and then saved when you quit. When a save game is created the game compresses the data then writes it out to a save data slot. When you travel the game is saved to a temp file so you can return. Windows bloats - that is just what does. While a small amount of free space may only cripple the operating system until there is a conflict, it will create delays in reads and writes causing data to become even more fragmented and creating lag to defeat the benefit of the ssd. While 120Gb storage device may seem like a lot back when 20Mb hard drives were in use, when 1Tb hard drives came out there was no need to worry about free space and users just booted up their computers and played games. Then ssd's came to be and the low density system storage devices need constant attention (again) and users forgot how Windows works. There are many users (my wife included) that are casual computer users that have no idea how the basic operating system works. While a 120Gb ssd would probably be nice in a student/business computer, IMO it is too small for the casual user on a gaming computer. While it may work at first after time due to bloat and as the size of the files you manipulate get larger there are going to be issues. I could discuss this at length but I'm running out of breath. Ssds are nice but the price per bit is coming down it is still a lot more expensive then conventional drives especially when I'm buying 7200 rpm 1Tb drives for $29.99 USD. IMO I would not sell a gaming computer with less then 500Gb (1Tb would be better) for a boot device as your looking at less then  $100 USD today for a 500Gb ssd. My problem is there is a read/write limit on the cells of a ssd and no one knows when that will be reached - they can only theorize when but the issue is ssd technology will continue to advance before these figures are reached. We can sit here for the whole next semester and if you replace the 120Gb system drive with a larger (much larger) your problem will probably go away would be my first solution.