[storage][file_systems] Recommend 32 GB of tmpfs

for gaming. This is based on testing done for the Steam Deck.
LukeShortCloud · Oct 25, 2023 · 895a17c · 895a17c
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diff --git a/src/storage/file_systems.rst b/src/storage/file_systems.rst
@@ -538,6 +538,8 @@ Swap is a special file system that cannot be mounted. It is used by the operatin
 -  2-8GB = RAM
 -  > 8GB = 8GB
 
+`Tests <../unix_distributions/steamos.html#increase-swap-size-and-vram>`__ on the Steam Deck show that a total of 32 GB of tmpfs (RAM and swap) provide the best gaming performance for APUs. Anything beyond that provides no performance benefits. This assumes that the iGPU from the APU will use 4 GB as VRAM. For the best results, add swap to a fast drive such as a NVMe drive.
+
 RAIDs
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