Jet Set Radio Future: FPS drops on boost on SteamDeck

[Godsbane]

Title

Jet Set Radio Future https://xemu.app/titles/49470018/#JSRF-Jet-Set-Radio-Future

Bug Description

Game seems to work perfectly until the boost button is hit, and then the framerate tanks to a few FPS at best and the game becomes unplayable until the effect is over.

Expected Behavior

When hitting the boost button, the framerate should not drop.

xemu Version

0.7.18

have tried it in each version since i got my deck, starting with 0.6.something. i don't recall exactly, but it has never worked.

System Information

OS: SteamOS SteamDeck

Additional Context

https://cdn.discordapp.com/attachments/968608420028620820/980001078517047336/20220528_015319.mp4

I'm not certain if this will work. I pulled it from a different user's post in discord, showing the issue. Let me know if you need another video.

Also the same thing happens when certain text enters the screen in THPS4. I will get around to making a proper report for that as well.

[Knucklesfan]

This is not just a problem on steam deck, but appears to be a universal problem involving linux in general.

[ShroomKing]

Same problem on macOS. Renderer bug?

[Horizon531]

Experienced the same issue running macOS. This doesn't appear to be platform specific.

[jcdj1996]

Same issue on Windows 10

[KickAssDave]

I wonder if it's a specific graphical effect causing this. Interesting, someone reported a very similar issue here: https://github.com/mborgerson/xemu/issues/1058

[DopamineSource]

yes i think its that ripple/motion blur effect. Gun Valkyrie uses it on Water too to create caustics i believe and about the same amount of slowdown that happens when boosting forward also happens anytime water is shown. JSFR also has a similar blurring/rippling effect when boosting and i wouldnt be surprised if that "certain text" in thps4 is a similar thing.

[OutRunner]

I think it's the same issue in Ninja Gaiden Black as well (https://github.com/mborgerson/xemu/issues/453). Certain transparency effects cause frame rate drops.

[HappehLemons]

I wish we could disable the synchronization event that was added to improve accuracy which causes this bug (#453). This has been an issue since 2021, so it would be nice to have a workaround to make these game playable again. Would really love to be able to play Ninja Gaiden Black on the steam deck.

[KerrWasHere]

Is there a chance of this being addressed anytime soon?

[Godsbane]

Zink helps!

[HappehLemons]

Maybe @mborgerson can provide some insight as I know this was an issue he was hoping to resolve last year.

[Chris-Ngu]

I remember putting off playing JSRF because of this slowdown; I decided to test it today because I have not tested any of the builds in the past few months and I did not run into this slowdown. Not sure if there was a PR that fixed this that I was not aware or if it's just something with my system, but thought I'd provide an update for those still interested

https://user-images.githubusercontent.com/57853013/210099522-39170dcc-3c88-4c09-b7ca-1babf9edf63f.mp4

XEMU Version: 0.7.71 System: Pop OS 22.04 Ryzen 5 5600x Radeon 6700 XT

[Godsbane]

Same experience on the Deck now. It drops the internal frame rate from 60 to about 55fps, but it's completely playable now.

Should close this issue as completed?

[jcdj1996]

Issue still present for me on 0.7.71. Framerate stays stable but 'MSPF' jumps from 4 to 40+ i7-7700K CPU @ 4.20GHz Windows 10 NVIDIA GeForce RTX 3060 Driver: 4.0.0 NVIDIA 527.56 Shader: 4.00 NVIDIA via Cg compiler

[KerrWasHere]

I’ll check this out shortly on the deck On Dec 30, 2022, at 1:35 PM, James Jennings @.***> wrote: Issue still present for me on 0.7.71 i7-7700K CPU @ 4.20GHz Windows 10 NVIDIA GeForce RTX 3060 Driver: 4.0.0 NVIDIA 527.56 Shader: 4.00 NVIDIA via Cg compiler

—Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you commented.Message ID: @.***>

[OutRunner]

JSRF is OK for me on Steam Deck too. Ninja Gaiden Black still has the heavy slowdowns so I guess it’s a different issue.

[ordinaryashen]

YAY! Gonna try this now also, such awesome news!

[HappehLemons]

Hey @OutRunner, do you know if the Ninja Gaiden Black still is having slow down caused by this regression?

[OutRunner]

@HappehLemons yeah it does seem so. The moves where Ryu leaves behind transparent echoes of himself and the times when dead enemies “dissolve” bloodily still have a lot of slowdown on Steam Deck. I use the version @pas-de-2 kindly built and uploaded here: https://github.com/xemu-project/xemu/issues/837#issuecomment-1435993325 for Ninja Gaiden and its mostly full speed.

[HappehLemons]

Oh, I didn't know this existed. I'll have to give this a try, thanks @OutRunner!

[cheatfreak47]

Yeah this still seems to be happening on some non-steam deck platforms, can confirm I am seeing tremendous FPS drops on an i7 7700 rig as well.