84% frame drop when logging with console open

[Patrick Wyatt]

When the console is open, and after several hundred messages have been logged, when new log messages are added the framerate drops by 84% (120 FPS → 20 FPS) in V2.6.6.

The issue seems to be that TextMesh Pro must render the entire multi-line block of 1024 lines after each call to QuantumConsole.FlushToConsoleText. Perhaps a ScrollView that only renders lines that are visible in the view – rendering _logStorage.Logs instead of _logStorage.GetLogString would work better?

[Patrick Wyatt]

Script to generate logging “noise”:

using UnityEngine;
using System.Collections;

public class LogFrequently : MonoBehaviour {
    private void Awake () {
        _ = StartCoroutine(LogFrequentlyCoroutine());
    }

    private IEnumerator LogFrequentlyCoroutine () {
        for (int frame = 0; ; ++frame) {
            Debug.Log($"frame {frame}");
            yield return 1;
        }
    }
}

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