maybe this is a dumb question but I have to ask. let's say that I need to run 300 times the decodeFromString in a loop. Do I need to run this in a suspend function with

withContext

If I don't want to have issues on main thread?

If you want to run this work off the main thread and distribute the work on a multithreaded dispatcher, you should:

suspend fun decodeOffMainThread() = withContext(Dispatchers.Default) { /* Your code */ }

// From main thread: 
repeat(300) {
  coroutineScope.launch {
    decodeOffMainThead()
  }
}

It’s not required because that function isn’t suspending.