can you try timeline7 - i have increased wakeup timers there, just to compare.
Also does the increased drain happen disregarding whether websync is enabled or not (when sync account logged out websync is disabled)?

To my observation drain is inconsistent, I can spend whole day losing 10% and then for half an hour it eats remaining 90%. Mostly when there's connectivity problems (eg. in the tube)
Twice a day though is really hard case, i used to charge my jolla once a week, then twice a week (as battery wears out). Now when I'm debugging app it also discharges quite fast, but still, at least one or two days is what I consider normal