Reproduced on my 3070, 565.77
Current proton experimental:
Current proton experimental with vkd3d-proton at https://github.com/HansKristian-Work/vkd3d-proton/commit/45e44534e9eebfc53dfbc84479af22a5f49f3517
Will attempt to bisect in the following days
Bisect results: First bad commit is 3298139aa6fe549e45c27c89237a4bbd8d1c9a12
proton experimentalx2 2024-12ge-proton9-20x1 2024-12ge-proton9-21x1 2024-12proton 9.0-4x1 2024-12
Horizon Zero Dawn Remastered performance has regressed on the latest versions for me.
When upgrading from GE-Proton9-20 to GE-Proton9-21 when I ran the in game benchmark I noted worse CPU performance.
With GE-Proton9-20 (vkd3d 45e4453)

With Proton Experimental (vkd3d ca98f98)

I also get the same results as Proton Experimental with GE-Proton9-21, Proton 9.0-4 and manually updating vkd3d-proton to release 2.14
I have tried manually updating vkd3d-proton to different commits and it looks like it started at commit 2deb6c9
Software information
Horizon Zero Dawn Remastered with theses settings:
Preset: Very High
Texture Quality: High
Motion Blur Strength: 0
DLSS Quality
System information
Log files
steam-2561580.log (proton experimental)