When I select HQ unit (for example HQ Bn in picture below) while in RTS mode games slows down to a crawl. Time on Controls panel is running noticeably slower and I can hardly scroll map. It seems this only happens when selected unit is HQ. After deselecting unit, game speed is going back to normal again and scrolling is smooth. Also, I tested this on laptop and same thing occurs. I have Command Ops I installed and everything runs fine. My configuration: Intel i5 750 2.67GHz, 8GB RAM, NVidia 770 GTX, SSD Disk, Win 7, 24" monitor.