[Nouveau] [Bug 99995] New: Dirt showdown very low fps (~3fps) after update mesa

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99995

            Bug ID: 99995
           Summary: Dirt showdown very low fps (~3fps) after update mesa
           Product: Mesa
           Version: 17.0
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: kevin01010 at gmail.com
        QA Contact: nouveau at lists.freedesktop.org

Hi, I updated from mesa 13.0.x to 17.0 and Dirt showdown in mesa 13 has around
25 fps and with mesa 17 has about 2fps..
I tried in ArchLinux and Fedora (fedora 26 mesa builds), and is the same, mesa
13 works a lot better in this game

My computer is a i5 4690 and has a Nvidia GTX 750

Mesa 17: CPU is 1 core 100% and the rest about 10%
Mesa 13.0.4: CPU is about 15-20% all cores

Maybe mesa is taking all work to CPU?

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