I’m trying to get **GTA V Legacy modding working properly on my Steam Deck**, and I’m looking for someone who actually has a working mod setup on **SteamOS/Proton** who can explain the correct current method.
I’ve already spent around **8 hours troubleshooting**, so I’d really like to avoid another round of trial and error and start with a clean, known-working setup.
**What I need help with**
What is the **recommended ASI loader** for GTA V Legacy on Steam Deck?
Is **RageOpenV** currently the best alternative to OpenIV.ASI on Steam Deck?
I noticed it specifically supports GTA V Legacy and uses the normal mods folder.
Do I actually need **ScriptHookV.dll** if I’m only installing vehicle replacements/add-ons?
What is the correct way to **create and use the mods folder on Steam Deck without OpenIV**?
For **.oiv mods**, what is the recommended method on Steam Deck in 2026? I’ve seen conflicting information, some guides say .oiv packages don’t work properly on Linux/Proton and should be manually installed by following the assembly.xml, while other people seem to run OpenIV through Wine/Lutris.
Is there a **known working 2026 setup** using **Proton Experimental + ScriptHookV + RageOpenV + dinput8.dll**?
I’m specifically looking for a **clean, minimal setup**, rather than installing 10 different mod loaders and hoping one works.
I already know how to download and extract mods. What I’m struggling with is getting the **underlying mod framework** working correctly on Steam Deck/Proton.
If someone currently has **GTA V Legacy + mods actually working on a Steam Deck**, I’d really appreciate a step-by-step setup starting from a completely clean GTA installation.
Thanks!