Yes the filters have been a bit too strict for snowshoeing and hiking! The problem with these slow sports is that if you look a the speed diagram there are many peaks because the GPS "jumps". For snowshoeing, there was a rule that the speed may exceed a certain computed level only for 5% of the time. This has now been changed to 20%.
Plausibility for February will be recomputed in the coming 2 hours.