Fallout New Vegas has abnormally poor performance

[Kim2091]

Describe the bug

• Once configured, Fallout New Vegas has abnormally poor performance compared to other games. On an i7 12700k and RTX 4090, I'm only getting 17-18 FPS. The DXVK hud reports 100% GPU utilization, but in actuality it's closer to 30%.
• dxvk-remix-b5d9a25-430-debugoptimized
• bridge-remix-667869b-60-debugoptimized
• RTX 4090
• 551.52
• Fallout New Vegas - GOG

Attach files!

• d3d9.log
• FalloutNV_d3d9.log
• NvRemixBridge.log
• rtx.zip

To set up FNV

1. Download these:

• https://github.com/BlueAmulet/RTXRemixStuff/raw/main/NewVegas/NewVegas%20RTX%20Mesh%20Patches.zip
• https://github.com/BlueAmulet/NewVegasRTXHelper/releases/download/rtx-v0.0.6/NewVegasRTXHelper.zip
• https://github.com/xNVSE/NVSE/releases/download/6.3.5/nvse_6_3_5b.7z
• FalloutNV ini.zip

2. Extract the contents of nvse_6_3_5b.7z to your game folder
3. Extract the contents of NewVegasRTXHelper.zip to your Data folder
4. Extract FalloutNV ini.zip to your Documents\My Games\FalloutNV folder
5. Install Mod Organizer, set it up for Fallout New Vegas, then install the mesh patch (this isn't strictly necessary)
6. Install RTX Remix, then launch the game from nvse_loader

To Reproduce
Steps to reproduce the behavior:

1. Load the game
2. Observe poor performance
3. If performance is okay, restart the game a few times.

Expected behavior

• Performance should be consistently good on such hardware

Other issues

• Crashes upon alt-tab on occassion
• Alt-tabbing can decrease performance

Screenshots
https://cdn.discordapp.com/attachments/1106553248590090351/1209954240294953083/Fallout_-_New_Vegas_2024.02.21_-_15.04.24.01_edit.mp4?ex=65e8ccb2&is=65d657b2&hm=ecb0b4d264537d41c6116f7669767a8710518372933c3f50f0c552528db3613e&

[Kim2091]

This may be down to the patches made to the game to disable culling. A recent patch for Barnyard was made to disable culling as well, and performance noticeably dipped. See the following posts for benchmarks: https://discord.com/channels/1028444667789967381/1106420949257044061/1213016247768195152

FNV and Barnyard have a lot of similarities in terms of Remix bugs due to both utilizing shaders to render terrain. It's possible this is another overlap

[NV-LL]

Hello! Will you please test this on the latest release and let us know if the issue persists? Thank you!

[Kim2091]

I'll test it tonight. Thank you

[Kim2091]

@NV-LL There was a very tiny improvement in performance, but sadly it's still unplayable. I'm not sure if it'll be of help, but here's the Reflex latency information:

[NV-LL]

Thanks for the update! We've filed REMIX-3373 for tracking