Need some help on setting up the emulator.

[Damned]

Yea Anis. Filtering doesn't really decrease the performance wether it's on or off

But is off the more accurate to how the PSP would render graphics?

probably the best option on Tex Filtering would be Linear for me.

But does nearest output like the hardware would?

And Finally, saves go on your PPSSPP folder: PPSSPP/memstick/PSP/SAVEDATA.

DLC would just go in PPSSPP/memstick/PSP/ correct?