The STLDLDIR ( usually ~/.config/stl/downloads) directory stores all downloads started through stl

To name a few those are

• Depth3D shader files
• Vortex the installation setup exe
• ReShade ReShade itself and required d3dcompiler dlls
• GFWL/xlive xlive replacement
• Proton packages Proton packages
• Shaders all Shader repositories
• X64dbg debugger
• Custom Proton
• Custom Wine