mag 250 keeps freezing

[pino2003fr]

my mag 254 t extreme freezing every 2 mins.and somtime rebooting, I did change inner portal buffer setting at 5000ms. i have direct hardware, ethernet connected, and Changed my network setting to manual and DNS as 8.8.8.8,
but still get freezing. My internet speed is at 25 mb
any help:confused::confused::confused: