Should I preload advertisement in Unity Ads

I want to give players a seamless experience by preloading ads so that when they request for a reward, the ads is shown immediately (ie no latency).

Sometimes the preloaded ads are never shown as players didn’t click on the reward button. I noticed the ads can become stale overnight.

Question: Does pre loading ads affect the income generation if they are not shown? ,

Found this related article which describes other issues that I faced. I have since migrated to Unity.Services.Mediation which seems to have better ad management.

Unity.Services.Mediation supports Autoload, which means preloading ads should not be an issue.

Link to the documentation.

Hope this helps.