Apex Legends does not allow to enable Reflex

[valters-tomsons]

Trying to enable the middleware on Apex Legends, but game doesn't seem to allow me to enable it.

What I've done, have I missed anything?

• Installed latencyflex and latencyflex-wine
• Copied nvapi.dll64 to steamapps/common/Proton - Experimental/files/lib64/wine/nvapi/
• Added dxvk.conf to steamapps/common/Apex Legends/ as described in README
• Symlinked latencyflex_layer.dll and latencyflex_wine.dll from /usr/lib/wine/x86_64-windows/ into steamapps/compatdata/1172470/pfx/drive_c/windows/system32/
• Added launch parameters PROTON_ENABLE_NVAPI=1 DXVK_NVAPI_DRIVER_VERSION=49729 DXVK_NVAPI_ALLOW_OTHER_DRIVERS=1 LFX=1 %command%

Full Log (with DXVK_NVAPI_LOG_LEVEL=info).

System: Arch Linux 5.16.10
GPU: Radeon RX590
Driver: Mesa 21.3.6

[TamsenSpelchak]

I can confirm that I have this feature working in Apex Legends.

I'm not sure if any of this helps, but here are the things that I can think of off the top of my head that might be causing the issue:

1. Make sure that the file is named nvapi64.dll, rather than nvapi.dll64. I'm sure this is just a typo, but I thought I'd mention it just in case
2. Don't forget to also copy/link over the /usr/lib/wine/x86_64-unix/latencyflex_layer.so, as well as the DLL files you mentioned in your report to the Proton installation. As per the README:

For Wine 7.x: change /usr/lib/wine to wherever Wine/Proton is installed. For Proton and certain distros, you also need to change lib to lib64. Copy the following files.
/usr/lib/wine/x86_64-unix/latencyflex_layer.so
/usr/lib/wine/x86_64-windows/latencyflex_layer.dll
/usr/lib/wine/x86_64-windows/latencyflex_wine.dll

I.E. put those 3 files (2 .dll and 1 .so into their respective folders next to the nvapi64.dll file you've already copied over.

Hopefully this is of some help!

[ishitatsuyuki]

What tizzir said. You probably missed lib/wine/x86_64-unix/latencyflex_layer.so, which is often confused with the main /usr/lib/liblatencyflex_layer.so (both need to be present/copied). The naming is partially a consequence to make the library name common between Linux and Windows, in case native Windows support is implemented. (#3)

[poligarpi]

Recompiling nvapi64.dll did the trick for me, also not all the launch options are required, here is mine:

gamemoderun mangohud ENABLE_VKBASALT=1 PROTON_ENABLE_NVAPI=1 LFX=1 %command%

[valters-tomsons]

Hadn't had the time to test this yet, will update 🤞

[ishitatsuyuki]

I think you forgot to copy the DLLs into the Proton x86_64-windows directory, see the newly added troubleshooting guide https://github.com/ishitatsuyuki/LatencyFleX/blob/master/docs/TROUBLESHOOTING.md#checking-if-the-wine-bridge-is-loaded (the one in /usr/lib does not get recognized by Proton)

[valters-tomsons]

Alright, I copied the files again (without symlinking) and it seems to work fine now! Thanks!

[asumagic]

It did not work for me because I was embarrassingly looking at the wrong compatdata directory, because I had an unused one for the game in my main steam install directory for some reason, where the one actually used was on a different steam install directory. Might be worth adding to the troubleshooting guide?

[MabaKalox]

@valters-tomsons got exactly same behavior, symbolic link didn't work, but plain copy works...