Even with a legitimate copy, Mortal Kombat X has known performance hurdles that can be exacerbated by unofficial compression: Mortal Kombat X on Steam Storage: 44 GB available space.
At least 36 GB of free space for the final installation. Graphics: NVIDIA GeForce GTX 460 or AMD Radeon HD 5850. Step 2: Installation Guide Mortal Kombat X Iso Highly Compressed