A Tool that can convert Picoscope waveform to Pulseview and keep analog wave.
After imported to PulseView, Its hightly recommand to save as a *.sr file that can reduce file size and open fast.
You can Convert analog to digital via threshould or schmitt-trigger in Pulseview.
A 2GB csv file need about 12min to finish convert in my computer(i7-8750H).