Since SteamOS 3.5 finally released into stable, I’ve been looking forward to try out PS3 emulation on the Steam Deck, especially the Uncharted series & MGS4.

Long story short, performance was rather subpar, with frequent FPS drops.

Looking around, I came across this post on Reddit:

https://www.reddit.com/r/SteamDeck/comments/16ydaoz/mgs4_on_rpcs3_with_full_visual_effects_on_the/

After applying the tweaks referenced there, I really did saw a boost of a few more additional frames, but the real improvement is that the frametimes become more even, resulting in noticeably less stuttering.

With a 50 % resolution render scale, Uncharted 1 can be considered playable on the Steam Deck, IMHO.

Hope these tweaks help you guys out, too!

  • HerakIinosB
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    1 year ago

    I havent tested PS3 as much, but the switch emulation has also improved a little

    THPS 1 + 2 is more stable in some levels

    Pokemon Violet used to run at around 80% speed with a lot of frame drops. Now it still has the frame drops but it seems to be running at full speed

    • Soft_Use_1496B
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      1 year ago

      btw make sure to reenable SMT for Yuzu, they seemed to have fixed the performance drop that required us to originally disable SMT

  • Kokumotsu36B
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    1 year ago

    Do these tweaks just effect Desktop Mode; PowerTools already allow CPU scheduler changes

  • re_nu_B
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    1 year ago

    I did these tweaks before updating to 3.5.5. Do I need to do it again now that I’ve updated?

  • smashman98B
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    1 year ago

    I’d love it if someone could tell me if infamous 1 and 2 are in a better state