Hidden Lines Visible When Rotating Issue: hidden lines are visible in HLR/HLV mode while rotating. To help optimize performance, hidden lines in HLR/HLV mode are visible when rotating a model. As soon as you release the pointer, the system recalculates HLR/HLV display. Parent topicDisplay Issues Slow Performance - Screen Flickering Screen Repaint Jagged Display Missing Faces Disappearing Faces During Rotation or Movement Incorrect High Quality Display Incorrect Draft Quality Display Missing Display