Those data are truly remarkable regarding their precision, Max. I suppose technically this is a bright outburst (no superhumps modulated with the Porb, which is too long to be a UGSU system).
I wonder if there is any way of probing (or estimating) how much of the disc goes into outburst. There is an idea that only part of the AD goes into outburst, resulting in these “stunted” outbursts. I therefore wonder if the eclipse width of this bright outburst is wider. Or perhaps this current outburst is a “normal” one, like the one 5 outbursts ago at the beginning of your second plot above, the intervening 4 being “stunted” outbursts……