PSP - iso vs. cso vs. pbp
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Is there any degradation in performance between iso, cso, and pbp in RetroPie?
RetroPie 4.8.4 • RetroArch 1.15.0 • Raspian OS • Pi 4B 8GB • WD 2TB SSD • SanDisk 512GB Extreme microSDXC UHS-I • SanDisk 256GB iXpand • Argon ONE M.2 Case • REiiE Keyboard • 8BitDo Pro 2 & Arcade Stick
retroachievements.org/user/kcoconnor76 -
@kcoconnor76 I believe pbp is only for official and custom-made ps1 eboots. I haven't tried .cso in emulation but on a real psp I would get increased load times and stutters in gta.
If the ppsspp dev ever adds .chd support then I'll considering converting my isos to that.
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CSO I believe are lossless -- all data is retained, the various compression levels 1-9 are just slower to process. You can decompress a CSO file to recover the original ISO exactly.
PBP are lossy -- some data is unrecoverable, the original cannot be restored from a PBP.
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I use cso files on Retropie and haven’t noticed any issues.
I tend to use the lowest level of compression as you seem to get diminishing returns the higher you go in terms of a reduced file size.
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I've been using cso as well. I don't really feel any difference than using iso.
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