HI Sergio,
I’d been having the same problem, the cursor jumping ahead of where I’d stopped it, sometimes about a second after. Then I also started having a problem with the timeline lag on pressing play or the spacebar, this got progressively worse until I could count a 5 second delay! I’ve checked out many forums and eventually found an answer last night. Check your audio hardware in Premier Preferences and under Default Device make sure that System Device Input/Output is not selected, I have it as Built in Line Output and Premier is back to normal both on playing and stopping. I hope this helps.
Best,
El