I hope the pair of you are aware it depends on the CPU and game. If he's running a 2500K at 4.5GHz then the slowdown will be the GPU. If he's running a pentium 4 then there's no way the GPU should be the first upgrade on his list.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
