Hi,
I've had a similar problem with Audition right from the start when I first subscribed -- the playback in the spectral view of any audio file is jittering/lagging/stuttering during playback while the audio itself is played without a hitch -- and nobody could help me with it. Now I have a similar problem with Premiere and I think the reasons might be the same for both problems.
Premiere worked fine the last time I used it (several months ago), where got a message that my graphics card wouldn't be supported with the next update. Now I had to use Premiere again and the playback is now stuttering/lagging, especially the audio. So I thought a new graphics card would solve the problem. I bought a new one, but the problem is still the same.
Can anyone help me, please?
Thank you and all the best!