Compatibility Report

• Name of the game with compatibility issues: Turbo Sliders Unlimited
• Steam AppID of the game: 1478340

System Information

• I am the dev, Steam Deck users have reported this issue with old and new system versions
• Some Linux users who have tried the game with Proton have reported the same issue, but no detailed system information available

I confirm:

• [x] that I haven't found an existing compatibility report for this game.
• [x] that I have checked whether there are updates for my system available.

Symptoms

When joining an online game as client, the game crashes right after connection has been established and sending Join message to server, before receiving Join Ok message.

Players can play the game with Steam Deck locally just fine, but whenever they try to connect an online game, the game crashes for an unknown reason. Using debugger and watching logs I can see that the client manages to make a connection and send a Join message which is received by Server, but client will crash soon after and not receive the Join ok message the server tries to send back to it. A similar crash happens if Steam Deck player tries to host a game and other players join it.

The game is made with Unity and it is using FacePunch.Steamworks library. It is using Steam sockets for network communication and it is working just fine on PC and dedicated Linux server, but the crash happens with 100% repro rate on SteamDeck.

I got a log file from one user but it doesn't help me understand what is wrong.

Reproduction

1. Start Turbo Sliders Unlimited
2. Go to Play -> Join and select any of the available servers
3. After the connection is established, the game crashes
   proton-crash-steam-1478340.log