What is your motherboard?
Because the 5600G only has 8x lanes of PCIe gen 3.0 for the graphics card which restricts available bandwidth.
Swapping for a Vermeer chip would open the full 16x lanes of PCIe gen 4.0 if the motherboard supports it.
Ryzen R7 5700X | B550 Gaming X | 2x16GB G.Skill 3600 | Radeon RX 7900XT
Ryzen R7 5700G | B550 Gaming X | 2x8GB G.Skill 4000 | Radeon Vega 8 IGP
Ryzen R5 5600 | B550 Gaming Edge | 4x8GB G.Skill 3600 | Radeon RX 6800XT