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Message: [QUOTE="valosagutas, post: 210980, member: 77791"] The obvious answer is, video games that had concern of space or it's developer's preference to compress their own video games for whatever reason outside of space concerns, they are compressed in certain ways. There are standard and non-standard ways developers compress their video games. When game is compressed, CPU has to unpack the data and then read it. In this context, when the game is already compressed and then you compressing it again, CPU may cannot unpack the game fast enough so codes of the game work in simultaneously in time sensitive matter. You can think it as how a factory works. Naturally factories works in a principle of everything has to happen in specific time frames, so when it doesn't they work for nothing and naturally they can ruin the whole factory. PS2 can use a streaming method that multiple things loaded and processed at the same time. I personally love PS2 because it can manipulate the data in the process of processing in a way during processing it it can change the data (for example it benefitted MGS 3 a lot). When game data cannot be processed in harmony, it happens, they may don't wait for each other to be completed. When this happen the task that was hanged or never happened can crash the game. Videos in PS2 video games are very sensitive in my experience to rip and mod video games. Some video games require a certain length of videos, otherwise they freeze, crash or never load the next part of the game. It makes ripping and modding PS2 games sometimes a hassle, limits your freedom. Next topic is if CSO compression method somehow corrupts the original file and if it would ruin the original method of how the game was already compressed: Nope. We can add CSO into "lossless compression method" for a good reason that all the fundamental part of the game is translated back to the original state of the file as it's. So CSO won't cause issue, but if the compression process itself was somehow failed I wouldn't know about that. But it's highly likely not why the game you mentioned had the problem. Nothing wrong with CSO itself, it was because how PS2 behave in certain video games. But now when you said about CSO was recommended it, I won't mean to say it's worse, technically IDK why someone would recommend it when CHD is a better compression method for PS2 because of the way it's. Then you may ask me what's key difference between CSO and CHD: CSO only care about lossless compression. CHD doesn't only care about file size reduction, it actually cares about integrity of different file formats. This is hard to explain because I don't mean CSO would corrupt a file, there is more than that. It's just CHD cares more about the individual file formats it detects and leave it as it was in original state of the game. Because of it I would highly recommend CHD. Then I can say the game may not have an issue if it was compressed via CHD method. But if it still does I would understand because when PS2 was already loading the game, it may not fast enough to decompressed the game within the right time to prevent the game from crashing. [/QUOTE]

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