CSO and ISO question

Discussion in 'PSP - Games & Content' started by Princess Rozalin, Feb 26, 2010.

  1. Princess Rozalin
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    Princess Rozalin †GBAtemp Official Princess Of Roses†

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    Ok Quick Question im just Wondering.Does Compressing a ISO to CSO make it work less or lag or anything else cause most of my Games are ISO so i wanna know if it Affects it in any Way if you Compress it/
     
  2. Ryufushichou

    Ryufushichou I'm Not British, I'm Just Gay!

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    No the speed doesnt slow down from tests i ran, it may be a 1 or 2 seconds slower loading but nothing major, also remember that not all games will work Optomized (i know Fate/Unlimited Codes didnt.)
     
  3. [M]artin

    [M]artin .

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    One of the biggest advantages in compressing an ISO into a CSO is that it brings the file size down (significantly in most cases), but you probably already knew that. [​IMG]
     
  4. Anhmeister

    Anhmeister Member

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    In my experience, games always loaded slower as a CSO. Of course, the size difference between the two is occasionally very large, so that may outweigh that downside for you. Personally, I only use ISOs as CSOs don't always work for all games.
     
  5. diddy81

    diddy81 Wii Theme Team

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    CSO images can lag i found this mostly on fast games like NFS and GTA you could try using a lower compression than 9 but its better if you do get lag to use a iso
     
  6. Cermage

    Cermage GBAtemp Advanced Maniac

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    depends on what games you play. i know for sure that the dj max games are unplayable when in cso format. song are out of sync.
     
  7. DarkWay

    DarkWay tsubasa hiroge

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    it completely depends on the game your playing, with games like GTA and some final fantasy games you may experience "some" (it's not much) lag during gameplay. most of my games on my PSP are CSO and very few of them are ISO.

    CSO also have different compression levels so if you find your lagging abit too much in a game redo the ISO into a CSO with a lower compression level (I think it's 1-9 9 being the highest level of compression)
     
  8. Sinistral89

    Sinistral89 GBAtemp Regular

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    When I play Dissidia and it is compressed to a CSO it takes forever to load...
     
  9. sadak5

    sadak5 GBAtemp Fan

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    The same happened to me, but other games took less time in CSO format. I think it depends of the game.
     
  10. steve-p

    steve-p GBAtemp Advanced Fan

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    i compress everything to level1
    but *not* outrun 2006 because it will glitch during play!

    i also use UMDgen to delete the update folder, the boot.bin and any pad files.
    but you need to know what your doing & test the cso before you delete the iso!
     
  11. Overlord Nadrian

    Overlord Nadrian Banned

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    It depends on the game, really, a lot of games won't have any lag at all, but some will lag all the time when CSO'd (like God of War, it's nearly unplayable [​IMG]) It's a bit of trial and error. Compress the games and see if you can live with the occasional lag.
     
  12. Hadrian

    Hadrian Better than Craigslist

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    I never had lag on GoW, converted with PSP ISO Compresser v1.4.

    Not had lag on anything really, all I had is longer load times which is a small price to pay.
     
  13. Jamstruth

    Jamstruth Secondary Feline Anthropomorph

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    It depends on your Memory Stick transfer speeds and your CFW. M33 has a speed up plug-in which works pretty well, GEN also has one though its not as good unfortunately.
    Fake or non-official Memory sticks without magicgate often suffer as well though their transfer speeds can be almost as good as proper Memory Sticks
     
  14. Overlord Nadrian

    Overlord Nadrian Banned

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    Maybe it's cause I used the ripped GoW, then...
     
  15. Jamstruth

    Jamstruth Secondary Feline Anthropomorph

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    Most likely not. I experienced lag in GoW until I decompressed it when using GEN-D3 and a Dual MicroSD adapter. It was only while it loaded parts of the games mind (this is where you really notice the CSO compression, when it loads during actual gameplay)
     
  16. Princess Rozalin
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    Princess Rozalin †GBAtemp Official Princess Of Roses†

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    Well after Compressing a Couple of ISO using Compression Level 9 i notice about 2 or 3 Seconds Lag on some other games up to 5 Seconds or more but its nothing too Big.
     
  17. wrettcaughn

    wrettcaughn Misunderstood Moral Elitist

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    I only use PSP ISO Compressor 1.4 set to compression level 1. There's normally only a few MB difference between level 1 and level 9 but it usually has a noticeable difference in load times.

    I never rip the update folder anymore with UMDGen. Many of the newer games have issues when they're rebuilt.

    It depends on how large/legit your memcard is and whether or not you really need the approx. 35MB that using compression level 9 and ripping the update folder would save you.
     
  18. Princess Rozalin
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    Princess Rozalin †GBAtemp Official Princess Of Roses†

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    wait so some Games might have Compability Issues with UMD GEN cause thats what i used to Rip the games i said Above.

    EDIT: Just Tested Crisis Core so far after a Compression from 1.59 it went to 1.09 and no lag issues as i can see.
     
  19. steve-p

    steve-p GBAtemp Advanced Fan

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    some games - i think ones by Taito can detect if the files move.

    soo, if you change a game with umd-gen and it fails do this:

    open the original iso,
    export the file-list,
    delete the junk,
    export - decrypt - import the EBOOT if you need to,
    then import the file-list again.
    it will ask about aligning files to the positions in the list - answer "yes"

    then save your iso / cso.
    [​IMG]