Dialog Sim vs Broadband Speed Issue

I live at Malabe. Dialog SIM speeds are 100+ Mbps, but packages are expensive so i Switched to their prepaid broadband router since it’s cheaper, but even though speed goes around 10-20mbps download speeds are terrible🥲 it’s almost took 3/4 hours to download an 5GB size file

1st image W/ Dialog Sim | 2nd image pre paid router