VCS Sync is Choppy

Hi,
Is it normal that playback of VCS videos in i2 or i2 pro is very choppy, it seems to be skipping frames. Any way to alleviate this? experiencing this on a XP 32 bit, and 7 64 bit, and 8 64 bit. Is there any compatibility for VCS manager in windows 8?
Is it normal that playback of VCS videos in i2 or i2 pro is very choppy, it seems to be skipping frames. Any way to alleviate this? experiencing this on a XP 32 bit, and 7 64 bit, and 8 64 bit. Is there any compatibility for VCS manager in windows 8?