Claret its an ATC problem where an aircraft approaching final
is instructed to maintain say 180kts till say five miles but will
be back to bug+adds well before then due to the silly archaic
"punishment" cultures of some Asian mobs. Don't forget that
bloody QAR is simply a Company stool pigeon for outfits like
these.
This happens a lot in places like SIN, and one will learn what
carriers are going to slow down very early, despite any ATC
instruction and one needs to adjusts one's speed (if following
behind) accordingly to avoid a pileup or GA.