Comparing DX12 vs Vulkan on RDR:2 with all graphics settings maxed out.
Please take into consideration that this video was recorded on the same PC where the test was running, so an additional 3 to 4 fps's should be considerad on average.
My system settings are:
Computer: ASUS
CPU: AMD Ryzen 7 5800X3D (Vermeer-X, VMR-B2)
3400 MHz (34.00x100.0) @ 3560 MHz (35.60x100.0)
Motherboard: ASUS TUF GAMING X570-PRO (WI-FI)
BIOS: 4403, 04/27/2022
Chipset: AMD X570 (Bixby)
Memory: 32768 MBytes @ 1800 MHz, 18-22-22-42
8192 MB PC28800 DDR4 SDRAM - G.Skill F4-3600C18-8GTZRX
8192 MB PC28800 DDR4 SDRAM - G.Skill F4-3600C18-8GTZRX
8192 MB PC28800 DDR4 SDRAM - G.Skill F4-3600C18-8GTZRX
8192 MB PC28800 DDR4 SDRAM - G.Skill F4-3600C18-8GTZRX
Graphics: MSI RTX 4090 Suprim Liquid X
NVIDIA GeForce RTX 4090, 24564 MB GDDR6X SDRAM
Drive: Samsung SSD 870 QVO 1TB, 976.8 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive: WDC WD20EARS-00J2GB0, 1953.5 GB, Serial ATA 3Gb/s
Drive: ST1000LM014-1EJ164, 976.8 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive: Samsung SSD 980 PRO 500GB, 488.4 GB, NVMe
Drive: MSFT XVDD, Disk drive
Sound: NVIDIA AD102 - High Definition Audio Controller
Network: Intel Wi-Fi 6 AX200 160MHz
Network: Intel Ethernet Controller I225-V
Network: Intel(R) Ethernet Controller (3) I225-V
Network: Intel(R) Wi-Fi 6 AX200 160MHz
OS: Microsoft Windows 10 Professional (x64) Build 19045.2486