Recently had a question about a game running on the deck, and actually got me thinking since steamos settings were briefly discussed: what are the settings to change for a steam deck, or tools to add? I do not mean more fps or more performance per say only, but more battery life or just better tools for certain aspects of the deck.
I’m not sure I’d go as far as replacing the file system. There’s a plethora of tools to do deduplication on ext4 as well. Albeit manually (or via cronjob).
Also, btrfs seems to be slower for random reads than ext4. At least that was the case back in 2019.
I’ve heard that using BTRFS with compression on a microSD and other slow access storage can actually speed up load times, because the biggest bottleneck is the read/write speed.
If you’ve got a slow-ish SD card and a game that compresses very well, then this might be the case. But with a modern card from e.g. SanDisk or Samsung with U3 and A2 certifications, this probably won’t do that much.