Now, in last 24-48 hours or so, the situation got much better. My RC has been recharging much faster then it looked straight after HF20 and also the cost of interactions (voting, posting, upvoting, following) is now lower. So I am much more positive then I was straight after implementation of HF20.
Dear my friend, lets hope it but this is my position, if i would be stopped to comment without be a spammer, this means there is a big bug in this HF20!
Maybe you should consider undelegating 3 delegations, which you currently have. This would give you additional SP. Also I see you could power-up a little bit. This 2 measures would practically tripple your current SP and give you tripple as much space for interactions.
Yeah, the initial issues are almost gone but not completely yet.