Lagging in Large Battles With Adequate System

My battle size is 150 and despite more than meeting the necessary specs to run the game fine at that size I lag pretty hard when I have a battle that large. My specs are:
i5 7500
GTX 970
8gb DDR4 ram

Anyone know why this is? Any help is greatly appreciated.

Submitted November 20, 2018 at 10:02PM by cody122450 https://ift.tt/2R1zq92