Freezing CrossTalk analysis

When running the cross talk analysis sequence, we are seeing hard freezes of the GUI. When force closing the GUI we saw that the GUI was stuck inside find_clusters(). We proceeded to comment out this section of code: https://gitlab.cern.ch/sdemares/felis/-/blob/master/core_methods/get_crosstalk.py?ref_type=heads#L72-82

and the test no longer freezes but obviously doesn't give results. Therefore, we believe the freezing issue stems from this section of code.