Huh, shows what I get for not paying attention here anymore... 😱
I've been running either OGR or RC5-72 on and off for a decade or so. In the past few years I've been exclusively OGR, as my GPU systems run other things. OGR-28 feels like it's going to take a lot longer than previous rulers, despite estimations that it would take about as long as 27. The only ways for it to finish on time would be either a large boost in participants, or a large number of small stubs later in the stubspace (to boost the average speed).