So, currently we are having problems with the I2C Communications on our cabinet
Each row on the cabinet has 5 boards which have 2 16bit io expanders
each board has 32 devices and there are 4 boards in total on 1 row that use the I2C Bus so the maximum amount of devices used is of course 128

each row is completely independent of each other, at the moment we are currently having an issue where the relay lights will turn on but will not turn off, it will only turn off the ones at the very end

we are using a arduino Giga R1 For the master controller

The very top boards with the relays on them are independent of IC2 And are wired up directly to the giga

Whole Board

right side left row

Signal when the lights wont turn off

The normal signal

Whole Board when relay lights are on

Does anybody have any idea on what we could try to fix this issue?

on the right side left row we have a 4.7K Ohms resistor
and on the right side right row we have a 10k Ohms resistor as we were experimenting, nothing seems to be working for what we do