I recently Received my 3 in 1 which I use with my cyclods. I have a few questions: 1. I am still not fully understanding when I should use PSRAM and when I should use NOR. 2. I also do not understand why there is a SAV slot for each game with 1-5 under it. Is this so you can save multiple games for the same cart? 3. Last when I open my save folder on my microsd card on my PC. I see .SAV's .SV1's .SV2's etc. What do these mean?