two things:

Did you put the teflon additive in right after the new rings? If so they may of
never seated.

Is this teflon additive bad? Yes it is bad. It will go anywhere it wants, not
where you want. If it is not fine enough it will clog the oil filter. It might
do some good for the bearings but what about the rings?

If it collects in the ring grooves and reduces the ring side play (on good
pistons/rings) the rings will no longer do their job and will cause great wear
in the rings and cylinders.