Adobe Audition [sound quality issues when recording with Audition]

I am having trouble with recording in Adobe Audition. There was a problem with a plugin, but supposedly now that is fixed after update, but I am still getting a fast robotic sound from my voice when I record. There are a lot of siblilance noises and distortion in my voice and I have to take time to correct a lot of clicks. It is not coming from my studio. Can someone give me some guidance on this? Or recommendations. I have an IMac computer. Someone suggested that maybe the sound from my computer might be causing the problem. I just don't want to spend a bunch of money with Apple and then find out it was one of the plugins or it was Adobe.

[Moderator note: moved to the best forum.]