here are the times of the board
i see that it has a problem in the delays.
i tried of course to follow the tutorial of the board but it's not possible to follow them, since with the new files of the board they changed the ui_clk, and even changing the ui_clk the problems remain.
by now i've tried more than 30 different configurations and none of them works. is it possible that it's so complicated to make a simple block diagram with a DDR3 memory and an ethernet port? it would be enough for me just one working configuration.