PPSSPP Symbian Port

[xsacha]

Doesn't matter where you install the game, it still drops its assets in E:\ too.

The ISO you will probably want on E:\ just because there's more space. Games can be 150 - 1000MB each and you probably only have about 100-300MB on C:\.
If you have a fast memory card (F:\) you can try that too. I haven't benchmarked the difference. It will probably just improve start up times.