I have relatively lower to midrange hardware but the game dips to like 5-10 FPS anywhere from a couple times a minute to every 3 seconds. My average fps (not accounting for sudden dips) is probably around 30-50 from what I can tell (not sure if there is a performance menu)
GPU: NVIDIA Geforce GTX 1050 Ti
CPU: AMD FX(tm)-6300 Six-Core Processor
RAM: 16gb DDR3