Posted August 08, 2023
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I will stick with GOG Galaxy for now, since it will eventually get the job done with little hassle. And maybe the GOG staff will fix its bugs along the way, as it does not reliably resume to download after PC standby until I restart the app. I already contacted support about that.
I did not know there were different language installers for the games. I am currently downloading Kingdom Come: Deliverance, which has various language options (fully voiced), but I did not get to choose the language when downloading the installer. Therefore I assume that I will get the installer with all languages.
You can change the preferred game language under "settings" -> "installing, updating".
Just above the backup download you can change the system and language of the download, if applicable.