@cooltahir
He has Galaxy E7, same Snapdragon 410 with higher resolution and bigger display, that scores 21500 too. So is the case with Galaxy A5 and Core Prime LTE.
Core Prime LTE variant has Snapdragon 410 SoC scoring 21500, and its 3G variant has Spreadtrum SoC scoring 19300.
Galaxy Core Prime LTE is under rs. 15000, runs LTE too [emoji14]. But that has only 207 ppi TFT display, though colors and viewing angle are very good.
1GB ram phones may cause lagging that could be fixed by using greenify and removing bloat after root.