VHS cameras send an Analog signal which can be out of sync. Do not record strait from the VHS camera if you want to record in High Quality
To fix this you can use a Time Base Correction device which can be expensive. I used an old Home Theater Receiver I have, between the camera and computer and this worked for me.
If you can, try to use a VHS player, Home Theater or something which may fix the signal from the video camera, don't connect the camera straight to the computer if it gives you audio delay in High Quality.
Have none of that, lower the video quality.
Hope this helps.