I don't have any ghosting on mine, get it to service.
Intel i5-2500K // ASUS Sabertooth P67 MB (BIOS 3602) // 8GB RAM // ASUS Nvidia Geforce TITAN (BIOS 80.10.39.00.0A) // Windows 7x64 with all latest updates and drivers // ASUS ROG SWIFT PG278Q // ASUS RT-AC68U