Using HD models increases RAM usage. Using the Large Address Aware tool is highly recommended to avoid "Out of Memory" crashes.
The
The only remaining hurdle is . The old client struggles to transition smoothly between HD run and HD idle animations, causing a "jerk" effect. Developers are currently working on a custom .exe launcher that fixes the engine's tick rate for animations. By 2026, 3.3.5 may look indistinguishable from Retail .