In-game gamma/brightness does not change

Hey, guys! First time posting here. I have a problem with Vampire: the Masquerade - Redemption. For some reason the brightness in-game is really low. Makes the game annoying to play due to levels being so dark it becomes hard to determine where to click to move. If I try adjusting the brightness in the game options, nothing happens. I tried messing with some advanced settings in Lutris, but unfortunately I haven’t found what is causing this problem. When I run this game just via Wine (without Lutris) this problem doesn’t occur, yet the game crashes after finishing the first quest. Anyway, I was hoping someone could give me a hint as to what’s wrong and how could I get the in-game brightness to normal levels?

– edit –
I’m having the same problem with Thief II: The Metal Age. The gamma just defaults to the lowest setting, and it is impossible to set it higher in the game options (nothing happens).

lutris -d output

INFO     2019-12-28 02:42:43,563 [application.do_command_line:225]:Running Lutris 0.5.4
INFO     2019-12-28 02:42:43,564 [startup.check_driver:62]:Using X.Org R300 Project
INFO     2019-12-28 02:42:43,565 [startup.check_driver:67]:Running Mesa driver 19.1.8 on ATI RV515 (0x7149)
INFO     2019-12-28 02:42:43,565 [startup.check_driver:79]:GPU: 1002:7149 17AA:2005 using radeon drivers
ERROR    2019-12-28 02:42:43,566 [startup.check_libs:112]:i386 libvulkan.so.1 missing (needed by vulkan)
ERROR    2019-12-28 02:42:43,566 [startup.check_libs:112]:x86_64 libvulkan.so.1 missing (needed by vulkan)
INFO     2019-12-28 02:42:43,567 [startup.check_vulkan:134]:Vulkan is not available or your system isn't Vulkan capable
INFO     2019-12-28 02:42:43,568 [dxvk.get_dxvk_versions:21]:Updating DXVK versions
INFO     2019-12-28 02:42:44,500 [dxvk.get_dxvk_versions:21]:Updating D9VK versions
DEBUG    2019-12-28 02:42:44,800 [http.get:65]:GET https://lutris.net/api/runtime
INFO     2019-12-28 02:42:44,803 [lutriswindow.toggle_connection:590]:Connected to lutris.net as an7h
DEBUG    2019-12-28 02:42:44,806 [http.get:65]:GET https://lutris.net/api/games/library/an7h
DEBUG    2019-12-28 02:42:50,596 [application.launch:339]:Launching Thief II: The Metal Age (wine) (140349436276600)
DEBUG    2019-12-28 02:42:50,694 [game.play:295]:Prelaunching <lutris.runners.wine.wine object at 0x7fa5a64adfd0>
DEBUG    2019-12-28 02:42:51,632 [display._get_vidmodes:15]:Retrieving video modes from XrandR
DEBUG    2019-12-28 02:42:51,735 [game.configure_game:331]:Launching Thief II: The Metal Age: {'env': {'STEAM_RUNTIME': '/home/hidraga/.local/share/lutris/runtime/steam', 'LD_LIBRARY_PATH': '/home/hidraga/.local/share/lutris/runners/wine/lutris-4.20-x86_64/lib:/home/hidraga/.local/share/lutris/runners/wine/lutris-4.20-x86_64/lib64:/usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0/32:/lib:/usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0:/lib64:/usr/lib/llvm/8/lib:/usr/lib/llvm/8/lib64:/usr/lib:/usr/lib64:/home/hidraga/.local/share/lutris/runtime/Ubuntu-18.04-i686:/home/hidraga/.local/share/lutris/runtime/steam/i386/lib/i386-linux-gnu:/home/hidraga/.local/share/lutris/runtime/steam/i386/lib:/home/hidraga/.local/share/lutris/runtime/steam/i386/usr/lib/i386-linux-gnu:/home/hidraga/.local/share/lutris/runtime/steam/i386/usr/lib:/home/hidraga/.local/share/lutris/runtime/Ubuntu-18.04-x86_64:/home/hidraga/.local/share/lutris/runtime/steam/amd64/lib/x86_64-linux-gnu:/home/hidraga/.local/share/lutris/runtime/steam/amd64/lib:/home/hidraga/.local/share/lutris/runtime/steam/amd64/usr/lib/x86_64-linux-gnu:/home/hidraga/.local/share/lutris/runtime/steam/amd64/usr/lib:$LD_LIBRARY_PATH', 'WINEDEBUG': '-all', 'WINEARCH': 'win64', 'WINE': '/home/hidraga/.local/share/lutris/runners/wine/lutris-4.20-x86_64/bin/wine', 'WINEPREFIX': '/home/hidraga/Games/thief-ii-the-metal-age', 'WINEESYNC': '0'}, 'command': ['/home/hidraga/.local/share/lutris/runners/wine/lutris-4.20-x86_64/bin/wine', '/home/hidraga/Games/thief-ii-the-metal-age/drive_c/thief-2-the-metal-age/Thief2.exe']}
DEBUG    2019-12-28 02:42:51,737 [game.configure_game:332]:Game info: {
  "env": {
    "STEAM_RUNTIME": "/home/hidraga/.local/share/lutris/runtime/steam",
    "LD_LIBRARY_PATH": "/home/hidraga/.local/share/lutris/runners/wine/lutris-4.20-x86_64/lib:/home/hidraga/.local/share/lutris/runners/wine/lutris-4.20-x86_64/lib64:/usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0/32:/lib:/usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0:/lib64:/usr/lib/llvm/8/lib:/usr/lib/llvm/8/lib64:/usr/lib:/usr/lib64:/home/hidraga/.local/share/lutris/runtime/Ubuntu-18.04-i686:/home/hidraga/.local/share/lutris/runtime/steam/i386/lib/i386-linux-gnu:/home/hidraga/.local/share/lutris/runtime/steam/i386/lib:/home/hidraga/.local/share/lutris/runtime/steam/i386/usr/lib/i386-linux-gnu:/home/hidraga/.local/share/lutris/runtime/steam/i386/usr/lib:/home/hidraga/.local/share/lutris/runtime/Ubuntu-18.04-x86_64:/home/hidraga/.local/share/lutris/runtime/steam/amd64/lib/x86_64-linux-gnu:/home/hidraga/.local/share/lutris/runtime/steam/amd64/lib:/home/hidraga/.local/share/lutris/runtime/steam/amd64/usr/lib/x86_64-linux-gnu:/home/hidraga/.local/share/lutris/runtime/steam/amd64/usr/lib:$LD_LIBRARY_PATH",
    "WINEDEBUG": "-all",
    "WINEARCH": "win64",
    "WINE": "/home/hidraga/.local/share/lutris/runners/wine/lutris-4.20-x86_64/bin/wine",
    "WINEPREFIX": "/home/hidraga/Games/thief-ii-the-metal-age",
    "WINEESYNC": "0"
  },
  "command": [
    "/home/hidraga/.local/share/lutris/runners/wine/lutris-4.20-x86_64/bin/wine",
    "/home/hidraga/Games/thief-ii-the-metal-age/drive_c/thief-2-the-metal-age/Thief2.exe"
  ]
}
DEBUG    2019-12-28 02:42:51,737 [command.start:112]:Running /usr/lib/python-exec/python3.6/lutris-wrapper 0 0 /home/hidraga/.local/share/lutris/runners/wine/lutris-4.20-x86_64/bin/wine /home/hidraga/Games/thief-ii-the-metal-age/drive_c/thief-2-the-metal-age/Thief2.exe
DEBUG    2019-12-28 02:42:51,738 [command.start:114]:ENV: SDL_VIDEO_FULLSCREEN_DISPLAY="off"
DEBUG    2019-12-28 02:42:51,738 [command.start:114]:ENV: STEAM_RUNTIME="/home/hidraga/.local/share/lutris/runtime/steam"
DEBUG    2019-12-28 02:42:51,738 [command.start:114]:ENV: LD_LIBRARY_PATH="/home/hidraga/.local/share/lutris/runners/wine/lutris-4.20-x86_64/lib:/home/hidraga/.local/share/lutris/runners/wine/lutris-4.20-x86_64/lib64:/usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0/32:/lib:/usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0:/lib64:/usr/lib/llvm/8/lib:/usr/lib/llvm/8/lib64:/usr/lib:/usr/lib64:/home/hidraga/.local/share/lutris/runtime/Ubuntu-18.04-i686:/home/hidraga/.local/share/lutris/runtime/steam/i386/lib/i386-linux-gnu:/home/hidraga/.local/share/lutris/runtime/steam/i386/lib:/home/hidraga/.local/share/lutris/runtime/steam/i386/usr/lib/i386-linux-gnu:/home/hidraga/.local/share/lutris/runtime/steam/i386/usr/lib:/home/hidraga/.local/share/lutris/runtime/Ubuntu-18.04-x86_64:/home/hidraga/.local/share/lutris/runtime/steam/amd64/lib/x86_64-linux-gnu:/home/hidraga/.local/share/lutris/runtime/steam/amd64/lib:/home/hidraga/.local/share/lutris/runtime/steam/amd64/usr/lib/x86_64-linux-gnu:/home/hidraga/.local/share/lutris/runtime/steam/amd64/usr/lib:$LD_LIBRARY_PATH"
DEBUG    2019-12-28 02:42:51,738 [command.start:114]:ENV: WINEDEBUG="-all"
DEBUG    2019-12-28 02:42:51,738 [command.start:114]:ENV: WINEARCH="win64"
DEBUG    2019-12-28 02:42:51,739 [command.start:114]:ENV: WINE="/home/hidraga/.local/share/lutris/runners/wine/lutris-4.20-x86_64/bin/wine"
DEBUG    2019-12-28 02:42:51,739 [command.start:114]:ENV: WINEPREFIX="/home/hidraga/Games/thief-ii-the-metal-age"
DEBUG    2019-12-28 02:42:51,739 [command.start:114]:ENV: WINEESYNC="0"
DEBUG    2019-12-28 02:42:51,739 [command.start:114]:ENV: game_name="Thief II: The Metal Age"
DEBUG    2019-12-28 02:42:51,740 [command.start:114]:ENV: PYTHONPATH="/usr/lib/python-exec/lib/lutris:/usr/lib/python-exec/python3.6:/usr/lib64/python36.zip:/usr/lib64/python3.6:/usr/lib64/python3.6/lib-dynload:/usr/lib64/python3.6/site-packages"
Running /home/hidraga/.local/share/lutris/runners/wine/lutris-4.20-x86_64/bin/wine /home/hidraga/Games/thief-ii-the-metal-age/drive_c/thief-2-the-metal-age/Thief2.exe
Waiting on children
All children gone
Exit with returncode 0
DEBUG    2019-12-28 02:43:10,082 [command.on_stop:161]:The process has terminated with code 0
DEBUG    2019-12-28 02:43:10,087 [command.stop:246]:Management process looks dead already.
DEBUG    2019-12-28 02:43:10,087 [command.stop:254]:Detaching logger
DEBUG    2019-12-28 02:43:10,349 [game.beat:622]:Game thread stopped
WARNING  2019-12-28 02:43:10,350 [game.on_game_quit:654]:Game still running (state: running)
INFO     2019-12-28 02:43:10,350 [game.stop:637]:Stopping Thief II: The Metal Age (wine)
TypeError: refresh() takes 1 positional argument but 3 were given
DEBUG    2019-12-28 02:43:10,352 [command.stop:246]:Management process looks dead already.
DEBUG    2019-12-28 02:43:10,352 [game.on_game_quit:673]:Thief II: The Metal Age stopped at Sat, 28 Dec 2019 02:43:10
DEBUG    2019-12-28 02:43:10,353 [command.stop:258]:logger already detached
DEBUG    2019-12-28 02:43:10,353 [game.save:234]:Saving Thief II: The Metal Age (wine)
DEBUG    2019-12-28 02:43:10,410 [lutriswindow.on_game_updated:721]:Updating game Thief II: The Metal Age (wine)
INFO     2019-12-28 02:43:12,373 [application.do_shutdown:450]:Shutting down Lutris