Steam\steamapps\common\Team Fortress 2\tf\sound\vovo_dutch, vo_french, vo_spanish. Keep only vo_english .Because Valve already applies lossless compression to official .vpk files, (typically 5–10% reduction). To achieve “highly compressed” status (e.g., shrinking 20 GB to under 5 GB), repackers must use lossy techniques.
Did you know Valve re-enabled the ability to push texture quality way beyond the "Very High" setting? Setting your textures to the max in the menu only hits a value of -1, but you can go all the way to -10 for significantly crisper models and environmental details. How to enable it: team fortress 2 highly compressed extra quality