Sounds like i'm having the same issue! Did you find a solution?

java.lang.RuntimeException: Forged Alliance Crashed with exit code -805306369. See C:\ProgramData\FAForever\logs\game_15372054.log for more information
at com.faforever.client.game.GameService.lambda$spawnTerminationListener$43(GameService.java:701)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
at java.base/java.lang.Thread.run(Thread.java:832)