You can find the requirements listed at the top of the Download Page. The current requirements for Lens Studio are:
Operating System: Windows 10 (64 bit); MacOS 10.13+
Hardware: Minimum of Intel Core i3 2.5Ghz or AMD FX 4300 2.6Ghz with 4 GB RAM; Intel HD Graphics 4000 / Nvidia GeForce 710 / AMD Radeon HD 6450 or better; screen resolution of 1280x768 or higher
Please make sure that you have the latest driver for your specific graphics card installed too.