Recently I decided to try out a few different ad network solutions. I've been using Ironsource for about a year. My average eCPM using Ironsource is about $60 with mediation on several major ad networks. I've been using Unity Ads instead now for a little while and the average eCPM is just $11. Thats an 81% decrease. Obviously a bit concerning. The user amount and views are about the same month to month. Does the eCPM go up over time? Is it better to use Unity Mediation?