Hi Fredfly,
what are the specs of your computer, it may help to determine what is wrong?.
If you have an older computer, it might suffer the same as the following SIS chipset. 
What do you mean by low latency kernel?.
Hi Fredfly,
what are the specs of your computer, it may help to determine what is wrong?.
If you have an older computer, it might suffer the same as the following SIS chipset.
What do you mean by low latency kernel?.