Okay, my conclusion:
Without the ppa only the game freezes.
With the ppa the whole System freezes.
Yesterday, before i applied this patches everything worked with the ppa...
cat /var/log/apt/history.log
Start-Date: 2020-12-28 16:52:23
Requested-By: jokergermany (1000)
Install: libgail-common:i386 (2.24.32-4ubuntu4, automatic), libgtk2.0-0:i386 (2.24.32-4ubuntu4, automatic), libgail18:i386 (2.24.32-4ubuntu4, automatic), libatk1.0-0:i386 (2.35.1-1ubuntu2, automatic)
End-Date: 2020-12-28 16:52:24
Start-Date: 2020-12-28 23:29:36
Commandline: aptdaemon role='role-commit-packages' sender=':1.268'
Upgrade: libegl-mesa0:amd64 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), libglapi-mesa:amd64 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), libglapi-mesa:i386 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), libxatracker2:amd64 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), libegl1-mesa:amd64 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), libgbm1:amd64 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), libgl1-mesa-dri:amd64 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), libgl1-mesa-dri:i386 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), libosmesa6:amd64 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), libosmesa6:i386 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), libgl1-mesa-glx:amd64 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), libgl1-mesa-glx:i386 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), mesa-vdpau-drivers:amd64 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), mesa-vdpau-drivers:i386 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), mesa-vulkan-drivers:amd64 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), mesa-vulkan-drivers:i386 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), mesa-va-drivers:amd64 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), mesa-va-drivers:i386 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), libglx-mesa0:amd64 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2), libglx-mesa0:i386 (20.3.1+git2012162009.4a87e444134fmesarc2, 20.3.1+git2012231915.b41a3c8a1d4fmesarc2)
End-Date: 2020-12-28 23:29:45
I think its a Mesa related bug.
I need to get back to git2012162009.4a87e444134