Tip for Steam users: If you own the original Titan Quest from before 2016, you received the Anniversary Edition for free. Just install that – the Legacy version is hidden in the “Betas” tab of game properties. Don’t use it unless you have a specific reason.
mode to enjoy the updated lighting and effects. If you notice performance "stuttering" or visual glitches, switch to mode for a more stable, classic experience. Titan Quest Anniversary Edition Enhanced Vs Legacy