ruanformigoni
commented
2 hours ago FlatImage itself has low overhead. This might be introduced by bubblewrap with the usage of namespaces to containerize applications, and having to load several libraries into memory that you already have installed on the host (but might have differing versions and be incompatible with your game). That is a price to make something to work everywhere.
Not sure if this is how flatimages works. But I have a flatimage for Command and Conqure zero hour and it consumes 2 GB of ram when it runs. Is this normal. When use wine that is installed using apt it only consumes about 400 MB of ram.