Hell Let Loose: Vietnam moves the series from Unreal Engine 4 to Unreal Engine 5, and its requirements are noticeably higher than its predecessor's as a result. Much of that comes down to environment density: Nanite virtualised geometry renders large volumes of individually modelled jungle vegetation across massive 100-player maps, which is demanding in the thicker terrain that a realistic rendition of the Vietnam setting needs.

The screenshots below show performance on my system — RTX 4070 Ti, Ryzen 9 7950X3D, 64 GB RAM, NVMe SSD — at Low and Epic graphics settings, on a 4K resolution with no upscaling or frame generation enabled:

Low Graphics Settings

Epic Graphics Settings

Both the minimum and recommended specs assume the use upscaling versus native rendering — DLSS or TSR is expected to be enabled to hit the stated performance targets — so hardware matching the minimum specs will fall short of it at native resolution.

Minimum System Requirements

Recommended System Requirements