His GPU is currently the bottleneck, but his CPU will be after the GPU is replaced. Listen to what the experienced people say before contradicting it.
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
