Performance degradation on Android and iOS switching between scenes

Questions & Answers
1

I have a very simple game in which the player, from the main game scene, can click a button to load an inventory scene.
In this inventory scene, I have only a Scroll View that gets populated at runtime with something like the following:

foreach (var c in coins)
        {
            coin = Instantiate(coinTemplate);            
            coin.transform.SetParent(content.transform, false);
            // some other stuff on this coin
        }

In Editor everything works perfectly, the issue is that on Android and on iOS I have very bad performance degradation every time the user switches between the two scenes. So the first time the inventory gets loaded game performance is normal, it gets slower after 2 or 3 times and unusable after 7 o 8 times.

Could it be a garbage collection problem?

I have tried to follow suggestions from the following link, but it didn’t help:

2

Can you send the entire method of this code and also the method that call this one?
and, usually, how many items are loaded in this foreach?

3

The solution was to keep the inventory always in memory, and switch between the scenes with LoadSceneMode.Additive.