Unfortunately, trial & error. The log doesn't identify the offending devices or files.
15:38:40.092: warning: EOI missing, emulating
Things look like they are improving. Your audio thread sure did much better in this session.
15:38:44.075: audio_thread(Audio): min=0.009 ms, median=0.505 ms, max=10.485 ms, 99th percentile=2.971 ms
03:24:32.190: audio_thread(Audio): min=0.008 ms, median=1.181 ms, max=919.385 ms, 99th percentile=11.057 ms
There's still some slight rendering lag but both of your monitors are still running at 165HZ. 120/60 are the best settings when using OBS. If you want higher than 120, get a 240 or 360HZ monitor. I have a 360.
15:38:35.067: Output 'adv_file_output': Number of lagged frames due to rendering lag/stalls: 6 (0.1%)