Mafia 2 Linux beats Windows

Mafia2 DirectX9 game - left running on proton 4.11-11 on Ubuntu 19.10 right running Windows 10 System Specs: CPU : Ryzen 3 3200G stock GPU : Vega 8 OC to 1700Mhz RAM : 3200Mhz CL16 16GB Resolution : 1920x1200 Game settings - all high