When my fugeray was flickering consistently (many times per second), it was an issue with the power supply board inside the transformer (the little black box on the cord). One of the capacitors had blown and needed to be replaced.
Makes sense with LEDs that if the lights are working at all, there is no problem with them and the problem is in the power levels - before anything else, you might want to try removing the cord from its timer (if it's on one) and moving it into a different room to test the direct connection to an outlet. The different room is to make sure you are on a different house circuit.
Finnex support was really good about it and if I had sent it back to them, they offered to fix it. Instead I was able to get the info and part and take care of it myself. If you can't find the answer you are looking for in the forum, I highly suggest getting ahold of them directly.