On Fri, 2020-09-25 at 00:30 +0200, Benjamin ~ b01 wrote
[...] I'm using a list-drip [...]
This abstraction is from an pre-[list store]-era. Mathieu Bouchard went to great lengths to optimize what was possible at the time, but there was still no other way than to pass at least half of the list around on each iteration. Nowadays you can serially scan through the whole list with [list store] which takes only linear time. You might already get much better results by replacing [list-drip] by the list serializer from the list help file (see bottom of the help).
Roman