A:AnswerHello,
The only way to really clear up a significant amount of space is to uninstall files/apps that you no longer need. Otherwise you may want to consider upgrading your hard drive or SSD!
A:AnswerHello,
NVIDIA has updated their drivers so that all their GPUs support Freesync. However, your monitor needs to be Freesync enabled for it to work.
A:AnswerHello,
Yes this system can work with 3 monitors. Depending on what model graphics card your system comes with, it should have around 3 DisplayPorts. We are unable to provide specific FPS information as that is dependent on your in game settings.