[Bug 110115] Very low performance on Megadimension Neptunia VIIR

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110115

            Bug ID: 110115
           Summary: Very low performance on Megadimension Neptunia VIIR
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Vulkan/intel
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: leozinho29_eu at hotmail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org
                CC: jason at jlekstrand.net

As I erroneously considered that a Proton bug was caused by Intel ANV (sorry),
https://bugs.freedesktop.org/show_bug.cgi?id=108727 was marked as NOTOURBUG.

Megadimension Neptunia VIIR with Steam Play 3.16-8 Beta still has significant
performance issues, being around 20 times slower than Windows 10 on certain
moments:

On Player Room:
- Windows 10: 18 to 25 FPS;
- Xubuntu 18.04: 1 to 1,5 FPS.

On game play (two Windows 10 data because, in some areas, it works):
- Windows 10: 5 to 14 FPS;
- Windows 10: N/A (Windows 10 Intel driver has some bug, maybe
https://bugs.freedesktop.org/show_bug.cgi?id=108531?);
- Xubuntu 18.04 0,7 to 1,2 FPS.

As a new FAudio version has sound nearly flawless, the very low FPS is main
issue this game has now.

System specifications:

Processor: Intel Core i3-6100U;
Video: Intel HD Graphics 520;
Architecture: amd64;
RAM memory: 8 GB;
Mesa: 19.1.0-devel (git-cbf022cb31);
Kernel version: 5.0.0-7-generic;
Distribution: Xubuntu 18.04.2 amd64.

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