Looking at the Steam user reviews and the community discussions... It does sound like a shit fest as far as optimization goes:
https://store.steampowered.com/app/1252330/DEATHLOOP/
https://steamcommunity.com/app/1252330/discussions/
https://steamcommunity.com/app/1252330/discussions/0/3040481812854117506/
PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850