Our starting lineup from the start of February onwards has had a net rating of -19.3 (meaning, they get outscored by 19.3 pts per 100 possessions).
2-man lineup data (sorted from best to worst):
Bojan/Royce: +9.8
Mitchell/Royce: +7.6
Mitchell/Bojan: +6.4
Gobert/Mitchell: -9.2
Gobert/Royce: -9.6
Gobert/Bojan: -9.8
Conley/Royce: -12.7
Conley/Bojan: -12.8
Conley/Gobert: -14.8
Conley/Mitchell: -17.0
3-man lineup data (also sorted from best to worst):
Bojan/Royce/Mitchell: +7.2
Bojan/Gobert/Royce: -8.0
Royce/Gobert/Mitchell: -9.1
Bojan/Gobert/Mitchell: -9.8
Bojan/Conley/Royce: -11.0
Royce/Conley/Mitchell: -16.0
Bojan/Conley/Mitchell: -16.8
Mitchell/Conley/Gobert: -20.1
Royce/Conley/Gobert: -20.3
Bojan/Conley/Gobert: -21.2
It's hard to separate Conley from Gobert because they play most of their minutes together, but the obvious interpretation is that Conley and Gobert, in any lineup, have been BAD. And what makes it particularly damning is that Quin plays these two together for fairly significant minutes against opposing teams' bench units. This same duo used to absolutely destroy teams last year - led the NBA in +/-, now they're getting destroyed themselves.