The performance of my VPS has steadily worsened and now I am losing sales/customers due to scripts timing out at times of high server loads. There are times I cannot even get WHM or cpanel to load or it takes minutes to load after entering login information. Pages that take around 300 ms to load at times of low usage are taking 7 to 10 seconds when the server is busy. Would a higher lever VPS with more priority alleviate this problem or should I go for a dedicated server? My bandwidth usage is very low.