Midgame crashes - with logs.

Game crashes in random moments usualy around 20 - 40 minutes.game_20900200.log game_20900178.log game_20900129.log

You have sound errors:

warning: SND: XACT3DApply failed.
         Invalid arg
warning: SND: Error playing cue 1 on bank 5 [music]
         XACT: Invalid arg

See also: https://forum.faforever.com/topic/4084/solutions-for-snd-error-xact-invalid-arg-xact3dapply-failed/1

A work of art is never finished, merely abandoned

To everyone whos having a problem with game crashes due to sound - try deleteing 2 music files from supreme main directory.
D:\SteamLibrary\steamapps\common\Supreme Commander Forged Alliance\sounds
.xwb and the .xsb "music".