How to prevent lag from Ad requests (Downloading and caching)

I've tried using the background thread and the main thread, when I use the background thread the game lags for about a second or two however if I use the main thread it lags roughly 5-6 seconds after calling the code and can crash.
What other methods are there for loading ad requests that don't seem to cause lag?

 

Can I see your background thread code?

 

Sure, I'm using the thread ninja plugin.

Code (CSharp):

1.  
2. using CielaSpike;
3. using System.Collections;
4. using UnityEngine;
5.  
6. public class LoadAdverts : MonoBehaviour
7. {
8.     Task task;
9.  
10.     void Awake()
11.     {
12.         StartCoroutine(LoadAds());
13.     }
14.  
15.  
16.     IEnumerator LoadAds()
17.     {
18.         yield return Ninja.JumpBack;
19.         AdTapsy.StartSessionAndroid("xxxxxxxxxxxxxxxxxxxxxx");
20.         AdTapsy.OnAdCached += delegate (int zoneId) {
21.             if (zoneId == AdTapsy.InterstitialZone)
22.             {
23.                 StopCoroutine(LoadAds());
24.             }
25.         };
26.     }
27. }
28.  

 

Hi, currently, as I'm unfamiliar with the "Ninja plugin" I cannot see a thread. Also, your task is never used.

Here is an example of Multi-threading - this is what you need.