Metal Gear Solid 2: Substance Vulkan Performance Issue

[mati-pepe]

Title

https://xemu.app/titles/4b4e0007/#Metal-Gear-Solid-2-Substance NTSC

Bug Description

Mgs2 has performance problem with Vulkan. OpenGL in mgs2 has a stable 20fps. with Vulkan it goes at the beginning 25fps but then when the character jumps on the crate fps drops to 9-10fps and stays like that when I enter the next level (character goes inside the ship) it goes back to “normal”. In mgs2 vulkan sometimes happens when the character does something e.g. enter first person mode or climb a ladder.

8mb.video-mgb-T7PS3NOG.mp4

Expected Behavior

Metal Gear Solid 2 on Vulkan worked as well as it did on OpenGl

xemu Version

xemu Version: 0.8.5

System Information

OS: Windows 10
CPU: Intel(R) Core(TM) i5-7300HQ CPU @ 2.50GHz
GPU: NVIDIA GeForce GTX 1050/PCIe/SSE2
GPU Driver: 4.0.0 NVIDIA 566.36

Additional Context

No response