BioShock Infinite is a first-person shooter video game developed by Irrational Games and published by 2K Games. It was released worldwide for the Microsoft Windows, PlayStation 3, Xbox 360, and OS X platforms in 2013, and a Linux port was released in 2015.
First, you make sure that you meet the official minimum requirements.
Minimum Requirements :
OS: WINDOWS® 7, 8.1, 10 (64-BIT Required)
Processor: Intel® Core™ i3-4170 or AMD FX™-6300 or better
Memory: 8 GB RAM
Graphics: NVIDIA® GeForce® GTX 750 ti or AMD Radeon™ R7 260x with 2GB Video RAM
DirectX: Version 11
But you would be surprised what percentage games will run below the minimum requirements as long as you’re willing to offer up some graphical fidelity How to boost up fps with the config file
the following tweaks can help quite lot, If your game seems like a slideshow even with rock bottom video settings, you would possibly be ready to improve performance with a dive into the low end pc’s config file.
What low end pc’s config file do?
Set game graphics lower than what is available in-game.
How to install?
Download the config, copy it to config file location, replace existing files if needed, enjoy! and if you get confused just follow the video tutorial above.