this felt pretty janky and awful for something they want me to pay for... on a 3060ti with 32gb of ram and installed on an SSD.

If endless waves of zombies to maim and shoot is your ideal afternoon filler, than this game is perfect for you.
With several generic maps (And not forgetting player made maps are available to be downloaded) consisting of 2 different gameplays- objective based maps(NMOs) and Zone Defence/Survival (NMS)against endless waves of brain hungry fiends. Visually not so pleasing but the always changing objectives for the objective based maps is quite enjoyable .