I have a pretty old gaming system at my home that run games like Hitman 2 to Max Payne 2 properly. But if i tried playing Max Payne 3, or COD, Ghost Recon, it just wont work. Its because my system's configuration is too low for such high end graphics games. Recently i tried playing Quantum Conundrum on the same system, and obviously i faced problem. But after some workaround i found a hotfix that helped me to play Quantum Conundrum smoothly on my same low config system.
So i thought to share the same with you guys as well as it can help others too. What you need to do is just replace your BaseEngine.ini file with the file attached with this system and lower the graphics option as well as disable the VSync. Thats it. Now play Quantum Conundrum comfortably.