Well, you need at least +6 VRAM dedicated GPU to launch games with high-end visuals on Unreal 5,
You need DX12 discrete GPU: 6 GB VRAM minimum (NVIDIA GTX 1660 Super / RTX 2060 / AMD RX 5600 XT / RX 6600).
Better 8 GB (RTX 3060 / RX 6700).
4Gb VRAM GPUs may run or not, it's more risky.