PPSSPP options explained

[dlanor]

I'm not sure what it means either, and my guesses go in various directions.

It could refer to mere visual playback of picture snapshots taken during gameplay, with the 'frequency' specifying either the snapshot frequency at playback or a frequency for automatic making of snapshots during gameplay.

But a more advanced functionality would allow a true rewind of the game to previous states, by taking savestate snapshots automatically during gameplay, using the specified frequency. (Obviously a rather low frequency, to avoid overflowing the storage space...)

I did find some other comments about a 'Rewind' feature which does seem to relate to savestates, and with some new such feature added to the UI just a few days ago.

In v0.9.5-139, the menu entry for this feature has a default value of zero (= Off) and a warning comment simply saying "mem hog", which implies that we're dealing with automatic savestates held in CPU RAM (at least for caching). Since there was no storage path specified I assume that these savestates are just in temporary storage per session.

So I think I've deduced the purpose of the feature, though some of its usage still remains unclear. This includes both what precise effect any number other than zero for that setting would have, as well as whatever method we can use to access these 'memory snapshots' (the true rewind operation).

Best regards: dlanor