I use TRAKTOR pro3 and AUTOGAIN. The right gain is always set to -2.5 DB in blue mode. That is, the program thinks that 0 DB on the controller corresponds to -2.5 DB in the program.
On the left, everything is as it should be.
it will be -2.5 DB
Yes, that's what I meant.
What controller are you using?
It may be a straightforward task of remapping your gain knobs, which have shown to be variably inaccurate with the Kontrol S2/3/4MK3 series and can't be recalibrated the usual way.
With generic MIDI controllers, there may be a problem with the MIDI assignments that we can fix.
With a blue dot it means it's set to user gain, isn't it, not autogain? The user gain setting is just an offset from the autogain value.
With left and right do you mean deck a and b?
What happens if you set it to zero before you load a track?