We've ordered a device in order to investigate this issue. Meanwhile, the flashing can only be eliminated by using a less complex LCD layout in AIDA64. For example, try to use a plain (or less fancy) background image. I know it's inconvenient, but sadly the Turing/Turzx firmware has certain limitations that we cannot get around. When you need to submit a large frame to the screen, the data has to be divided into two halves and submitted in 2 rounds and that will cause a flashing effect.