Hi @crezle - The issues should now be resolved with pyjoulescope_driver 1.3.17 and joulescope 1.1.8.
With these new versions, the fsr skip at the start, which was the duration since the JS220 was first used, is fixed. We also fixed the fsr skip warning message at the end, which was caused by the code not cleanly stopping the JS220 streaming.
You can upgrade both pyjoulescope_driver and joulescope using:
python -m pip install -U --upgrade-strategy eager joulescope
Does this fix the issues for you?