The new "TachyonL-OSPRay" renderer achieved higher performance than the traditional standard Tachyon renderer, making it easier to produce publication-quality graphics without needing external rendering software.

Re-install the plugin pack from the official download page [1]. Conclusion

VMD 1.9.3 defaults to software rendering if it does not detect your GPU correctly. vmd 193 download better

Vmd 193 Download Better [2021]

The new "TachyonL-OSPRay" renderer achieved higher performance than the traditional standard Tachyon renderer, making it easier to produce publication-quality graphics without needing external rendering software.

Re-install the plugin pack from the official download page [1]. Conclusion

VMD 1.9.3 defaults to software rendering if it does not detect your GPU correctly.