significant latency using virus ti 2 as soundcard

[nuclearz0r]

hey, i recently purchased a virus ti2 full 61keys keyboard edition, using it on cubase i have tested two different sample settings, one 256 which has a noticeable latency, and if i switch to 128 samples i hear noises/cracks, both settings share the same property which is the sound comes out less alive less quality than it sounds if i use the virus as standalone, any suggestions?