Latency issues

[LYagami]

Im using a 3rd party router - WTFast and my ISPs plan shapes nothing whether it be P2P data or bandwidth.
Its specifically only that telstraglobal server, and it seems its starting to do it every night now - fine during the day.
Im in contact now with WTFast hoping they have an alternative route but by fiddling with the settings manually it seems as though its an unavoidable step. My ISP cant do anything either as my net is perfectly fine and they have no control over an international server that isnt theirs.
Only been happening the last few days though so something has certainly changed...getting to the point where its unbearable and i cant do any dutys when im constantly spiking for 3+ seconds and getting hit left right and centre as a tank.

Also as ive stated Raist this is to the JP datacentre as i am in Australia and play on them for the best ping, US is far too high to play on. Any US/Canadian servers would be useless as we go through Malaysia up to Japan.