It’s probably as much the environmental factors as anything else. If you are playing in a garage, you may have more reflective surfaces bouncing the sound around. If you have a large flat metal garage door in the room, that won’t help much. It would be like playing in a metal box. Is there any carpet on the floor? I guess you have your speaker cab placed directly on the ground, not isolated like studio monitors. So all in all it’s never going to sound the same as a recording.
Trying to tweak a profile to suit that kind of environment would be a challenge for anyone.
Hope you sort it out.