Vesc 6 - Rotorposition control with Encoder AS5047P

Hey, 

I still have problems with the implementation of my AS5047P in order to control the rotor position. In the Vesc Tool I can see that it´s actually working but the signal is coming with a long time delay. Also I get the blinking red lights and the FAULT_CODE_ENCODER_SPI. In sensorless mode everything is working fine without any red blinking lights. The encoder uses 5V and I run the motor in FOC Encoder Mode. I´ve read through a lot of discussions here about this topic and used short, shielded cables. I shortened the cables two times and it is actually weird that after the first time (cables were about 30cm) the position control worked fine without any delay but after a few days it started blinking red again (current situation). A second time shortening the cables to about 20cm didn´t help.

Do you have any idea, what the problem could be? 

Thanks a lot in advance! :)