J_4rb1exordiumis there any way to get the old lighting from around 2016 back, like the one in this video? (sv_pure doesnt matter) https://youtu.be/am04TAjC0MQpretty sure the lighting was the same as today in 2016/2017, the video uses a custom config, mat_bumpmap 0 should do the thing
Edit: You can also try using building_cubemaps 1
i have the config used in the video, it seems much brighter then current tf2