Speed can be easily increased,but SR has PF constraints so given depature time as 13:15 in view of TPTY-MAS exp arrival and depature on same pf
Current travel time till GTL from MAS is 9hrs 30mins...can speed up easily by 1hr and GTL-UBL is currently taking 6hrs 10mins can speed up by 30mins,of total 1hr 30mins
But this 1hr 30mins will make this train arrival at UBL in odd time approx 4am,this could be reason for intentional slow down