i m from bukit jalil, and alwis get 60.x.x.x ip, b4 cny i was playing online game (taiwan) with good ping 70-150ms, after cny i alwis get 500ms ping.. anyone know why ?

and another problem, when it is 1am-6am, the ping will goes up to 1000-1500ms, this problem occurs all the while either b4 or after cny.. anyone know why ?