Performance Regression

[manny22339988-source]

Bug Description

The recent update of hakuX addresses a performance regression on Adreno <740 devices. Vulkan is really slow on my device when I use X1box. I think this wasn't accounted for when you added his hacks to your emulator. It seemed to only favour high-end devices.

I have an 865 Snapdragon Device, Adreno 650. I use MTR 3.2.2-p driver and it's still slow.

Expected Behavior

Performance should be higher.

xemu Version

Performance was better on 1.2.3.

System Information

No response

Additional Context

No response

[izzy2lost]

My device is snapdragon 710 and it's not slower on it. So it's not every device under 740.

…

On Fri, Apr 10, 2026, 7:58 AM manny22339988-source ***@***.***> wrote: *manny22339988-source* created an issue (izzy2lost/xemu#30) <#30> Bug Description image.png (view on web) <https://github.com/user-attachments/assets/7158e82e-a1be-42d8-905d-96d0e77e28dc> The recent update of hakuX addresses a performance regression on Adreno <740 devices. Vulkan is really slow on my device when I use X1box. I think this wasn't accounted for when you added his hacks to your emulator. It seemed to only favour high-end devices. I have an 865 Snapdragon Device. Expected Behavior Performance should be higher. xemu Version Performance was better on 1.2.3. System Information *No response* Additional Context *No response* — Reply to this email directly, view it on GitHub <#30>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BIXZCLF5TU54Z6YMCLWCI4D4VDOWPAVCNFSM6AAAAACXT3WGROVHI2DSMVQWIX3LMV43ASLTON2WKOZUGIZTQOJYG4YTMNI> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[manny22339988-source]

Even if your device is an exception, it doesn't change the fact that Vulkan has suffered from performance regressions on devices. Someone else even reported a similar issue I see. It's chugging a lot more. I had the same issue with hakuX then it was fixed in 0.3.1.

[izzy2lost]

Almost every single person said hakux was faster than mine. I added hakux stuff. Now you say it's slower than my last update? Almost everyone I heard from says it faster it's just less stable and correct for rendering. So I'm not sure what the disconnect is here. I can try implementing whatever hakux did again, but that's what messed up it in the first place. My repo is already a mess because of it. Sorry just frustrated, I'll look into it.

…

On Fri, Apr 10, 2026, 10:35 AM manny22339988-source < ***@***.***> wrote: *manny22339988-source* left a comment (izzy2lost/xemu#30) <#30 (comment)> Even if your device is an exception, it doesn't change the fact that Vulkan has suffered from performance regressions on devices. Someone else even reported a similar issue I see. It's chugging a lot more. I had the same issue with hakuX then it was fixed in 0.3.1. — Reply to this email directly, view it on GitHub <#30 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BIXZCLAETGL7KHOZYAV7U2T4VEBCLAVCNFSM6AAAAACXT3WGROVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DEMRUGUZDIOJSHA> . You are receiving this because you commented.Message ID: ***@***.***>

[Andiweli]

Btw haKuX never worked for me (SD865). Had either slower performance than your port or flickering textures.

[izzy2lost]

Ok thanks

…

On Sun, Apr 12, 2026, 10:49 AM Andiweli ***@***.***> wrote: *Andiweli* left a comment (izzy2lost/xemu#30) <#30 (comment)> Btw haKuX never worked for me (SD865). Had either slower performance than your port or flickering textures. — Reply to this email directly, view it on GitHub <#30 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BIXZCLF6NGPWKDEXS6OWFST4VOUHRAVCNFSM6AAAAACXT3WGROVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DEMZRG4ZTINRSHA> . You are receiving this because you commented.Message ID: ***@***.***>