[Anv][Intel] ARC A770 performance issues across games

Hello all, wanted to create this issue on Intel ARC A770 I am noticing on multiple games with Linux . thank you for supporting linux from the get go. Hope we can get it on par or better than windows with time.

System Information

$ uname -a
Linux pop-os 6.1.11-76060111-generic #202302091138~1675975749~22.04~f771a7f SMP PREEMPT_DYNAMIC Thu F x86_64 x86_64 x86_64 GNU/Linux
$ glxinfo | grep Mesa
client glx vendor string: Mesa Project and SGI
    Device: Mesa Intel(R) Arc(tm) A770 Graphics (DG2) (0x56a0)
OpenGL renderer string: Mesa Intel(R) Arc(tm) A770 Graphics (DG2)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 22.3.4
OpenGL version string: 4.6 (Compatibility Profile) Mesa 22.3.4
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 22.3.4

CPU : i7-13700
RAM : 32GB DDR5

Kernel options (additional) : i915.force_probe=56a0 

Screen 4K dell screen 60hz

Running everything under steam + proton experimental Re-bar enabled in BIOS

DXVK (DX11 , DX9) games

God of War

With FSR 2.0 set to ultra performance (720p) internal (game at mix of original and high settings) , get 40-50 fps, looks like lower than windows by a significant degree

AC Unity

at any resolution tested from 1080p to 4k on 10-24 fps

Sekiro Shadows die twice

Guess to volumetric setting there are flashing red purple lights on screen constantly. and performance seems to fluctuate all resolutions

VKD3D-proton (DX12)

Touryst - A Simple voxel based game

Struggles to hit 60fps, can hit so on steam deck with ease at even supersample 1080p.

Games failing to start possibly due to lack of sparse residency and other vulkan features

1. Spider man remastered
2. Spiderman miles morales
3. hogwarts legacy
4. hi-fi rush
5. Elden ring
6. AC Valhalla

The surprising good runs

1. Jedi Fallen order runs very well 3200x1800 at high
2. AC Origins and Odyssey run pretty well at 1440p.

Here is hoping some of these issues can be ironed out before bigger games like Jedi survivor land this year.