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Steam Deck21 Reports
GST_PLUGIN_FEATURE_RANK=protonaudioconverterbin:NONE %command%
Using GE-Proton8-27 caused audio desync. Better than no audio though
With GE-Proton8-27, I was able to play through the P4 Story mode, but after I started the P4A story mode (and the additional stories) some of the anime cutscenes would only show a black screen. Switching to proton experimental (same launch options) would make these cutscenes playable, but then some which worked on GE-Proton8-27 wouldn't work, so I had to switch about four times during my playthough of the story modes. (~25ish hours)
The singleplayer fighting game parts seemed fully functional. I haven't tested local multiplayer or netplay, I was mainly there for the story. If you're interested in the story, it is playable with some active tinkering.
GST_PLUGIN_FEATURE_RANK=protonaudioconverterbin:NONE %command%
Audio missing without proton launch options. Those specific launch options only seem to work on older version of proton GE. Even with the launch options audio can be out of sync.
Some story cutscenes do not work, they show color TV bars and static. Using Proton GE fixes it.
In order to play through the story mode you will need to use older versions of Proton GE like the one I'm using in order to make cutscenes work and launch options to make the audio in those same story cutscenes work. The intro and some other cutscenes work fine without tinkering, it's seemingly random which specific ones show TV color bars and have no audio. If you just want the gameplay or online, then no tinkering is required.
Some cutscenes (not the intro, an example would be one that plays during Episode P4 in Chie's "The Meeting") will show TV static and color bars upon playing. The only way to fix this is Proton GE
Game runs fantastic, if all you want is the online and arcade modes, then you don't need to tinker at all. If you want to play the story, use Proton GE and all cutscenes will load properly.
Seems like any previous audio issues have been resolved. Latest Proton version (9.0-4) runs the game perfectly fine
Used remote play together. Other user didn't experience slowdown.
Game will show the test pattern for videos... until the shader cache downloads from Valve. Then all gameplay required cutscenes will play without issue, including sounds. Only the arcade tutorial cutscenes 3 and 4 will keep the 'test pattern'.
GST_PLUGIN_FEATURE_RANK=protonaudioconverterbin:NONE %command%
Story cutscenes will be completely mute without the launch options and Proton Experimental
No encontré problema. Terminé el juego en arcade sin problema.
It was pretty straightforward to me to run P4AU under steam deck. I just downloaded and started the game. I made a CPU match, changed VA and text language without any issue.
Works perfectly as expected. Game supports Steam Input too.
Ran well. One of the initial cutscrenes wouldn't play, but game skipped this and continued. All over cutscenes have been ok.
GST_PLUGIN_FEATURE_RANK=protonaudioconverterbin:NONE %command%
Without tweaking launch options and proton experimental, the game would not boot. Crashes back to steam while in the "starting up" screen.
Ends up this port was (likely) made with the same codecs as Persona 5 Strikers, so the same fix can be applied.
Used the launch arguments "GST_PLUGIN_FEATURE_RANK=protonaudioconverterbin:NONE %command%"
Lags a pinch in menus.
If the launch arguments are not used, cutscenes will be audioless.
Some small artifacts were on the screen, nothing game-breaking however.
Cutscenes do not work at all as of the time this was posted, I can imagine that this is prone to change with experimental though.
As of now, Story mode is fucked, cutscenes don't work at all. If you seriously want to play the game just for the combat (which I find to be an amusing prospect) you'd be fine however, I can see this changing in the near future considering the nature of proton experimental...though I HAVE seen people run this on proton 7.0-6...it's just a matter of figuring out what they did differently...expect an updated report when denuvo allows me to run the game again.
On launch after there are sometimes small artifacts (about 2px*2px) on the top of the screen until entering the main menu. Menu text can be blurry if using anything but Full Window 1280x720 - if changing the display resolution a restart of the game is required for font aliasing to apply correctly.
Some cutscenes work with video and audio but others display a generic no broadcast type video. For example, with Yosuke's campaign, the first cutscene works correctly but the last one does not.
This does not affect the ability to play the game, but may reduce the enjoyment of the single player campaign if you're playing for the story; although the cutscenes tend to be short in length and are non-essential to the plot in my 5 hours with the game so far.
Small lag when selecting arcde mode until character selection screen (I'm running installed to an sd card).
On first launch after install there are small artifacts (about 2px*2px) on top right of screen when viewing the intro video using the default display mode. Fixed by changing to full window 1280x768 and restarting. Text is sharp so long as resolution is not changed; if changing the display mode, a restart of the game is required or fonts look blurry.
Small lag when choosing a character in arcade mode immediately after installation.
Use proton experimental for sound to work in cutscenes. After install, set display resolution to full window 1280x768 and restart the game to enjoy sharper display. Performance is very good running at High settings. No missing video or audio observed with proton experiemental.
During videos which play sound is missing on Steam Deck.
Videos are probably not always playing
Sound in cutscenes not working
Menu text is pixilated, all other text is very legible.
Audio on cutscenes is missing.
Launching with default proton (7.0-1) lead to flickering of backgrounds which, in my opinion, is unplayable.
The game works fine, it's still very playable and runs well. But the constant flickering is very distracting.
A lot of the textures in the menu and the background flicker. Luckily the characters themselves stay on screen at all times.
I wouldn't recommend buying the game just for the Steam Deck. But if you have even a semi-decent PC it would probably be able to run it, then you could use the Deck to sharpen up your moves.
Gameplay is flawless, runs great. Online works well. Main issue is that cutscenes don't work, but that doesn't lock out progress afaik
Run on Proton Experimental, 7.0-1 had some major graphical issues with the stages that were not fixed by restarting the game.
