Bug#1003559: openarena: Performance drop after upgrade to bullseye/Debian 11

[Paul Lammers]

Package: openarena
Version: 0.8.8+dfsg-5
Severity: important

Dear Maintainer,

The frame rate of openarena has dropped from ~50 on average to ~10 on
average (very rough estimate)
This occured after upgrade to Debian 11, to my knowledge the openarena
package itself has not been updated during the bullseye upgrade,
implying that some other change to my system cause the performance
drop. I have not been able to test it on other systems.

I don't have the testing repositories active.

I have checked it is not the same as bug #711519 by setting flares to
off. 
(https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=711519)

OpenGL seems missing from the setup->system-gldriver configuration
options, and now I'm not sure if it was there before the upgrade to
bullseye.

Thank you in advance for any useful directions, I'm available for
questions.
Best, Paul

-- System Information:
Debian Release: 11.2
  APT prefers stable-security
  APT policy: (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.10.0-10-amd64 (SMP w/2 CPU threads)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
(ignored: LC_ALL set to en_GB.UTF-8), LANGUAGE=en_GB:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages openarena depends on:
ii  ioquake3                      1.36+u20201117.d1b7ab6~dfsg-1
ii  libc6                         2.31-13+deb11u2
ii  openarena-081-maps            0.8.5split-12
ii  openarena-081-misc            0.8.5split-12
ii  openarena-081-players         0.8.5split-12
ii  openarena-081-players-mature  0.8.5split-12
ii  openarena-081-textures        0.8.5split-12
ii  openarena-085-data            0.8.5split-12
ii  openarena-088-data            0.8.8-10
ii  openarena-data                0.8.5split-12

Versions of packages openarena recommends:
ii  openarena-oacmp1  3-5

openarena suggests no packages.

Versions of packages ioquake3 depends on:
ii  ioquake3-server  1.36+u20201117.d1b7ab6~dfsg-1
ii  libc6            2.31-13+deb11u2
ii  libcurl3-gnutls  7.74.0-1.3+deb11u1
ii  libgl1           1.3.2-1
ii  libjpeg62-turbo  1:2.0.6-4
ii  libopenal1       1:1.19.1-2
ii  libopus0         1.3.1-0.1
ii  libopusfile0     0.9+20170913-1.1
ii  libsdl2-2.0-0    2.0.14+dfsg2-3
ii  libvorbisfile3   1.3.7-1
ii  zlib1g           1:1.2.11.dfsg-2

Versions of packages ioquake3 recommends:
ii  x11-utils  7.7+5
ii  zenity     3.32.0-6

-- no debconf information