Squad 44 (736220)

Compatibility Report

• Name of the game with compatibility issues: Post Scriptum
• Steam AppID of the game: 736220

System Information

• GPU: NVIDIA GeForce GTX 1070
• Driver/LLVM version: NVIDIA 440.44
• Kernel version: 5.3.0-24-generic
• Link to full system information report: https://gist.github.com/antimech/463b5115aadc7b1d745a31b1d307a2de
• Proton version: 4.11-11

I confirm:

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

Symptoms

Error message shows after starting the game:

EasyAntiCheat Error: Failed to create IGameClient instance!
Check that the game was run from the correct launcher.
Online Play may not be available.

And of course multiplayer won't work, while the very similar game "Squad" (which I believe from the same devs) works fine without even tinkering (at least for some players).

Reproduction

Just start the game.

steam-736220.log

Start with the linked steam-736220.log and reproduce by launching Post Scriptum (Steam AppID 736220) with Proton 4.11-11 on Linux. Confirm whether the EasyAntiCheat “Failed to create IGameClient instance” error and multiplayer failure still occur; the report names no source file or test to target.