Adobe Premiere 2015.3 weird timeline playback

[Jon Doughtie]

Hmmm. No info about your system, type of footage, storage media, etc. That information helps.

Without that information, the first things I would suggest are [1] clearing cache files, [2] rebooting, and [3] rendering the timeline. Then see what your results are.

System:
Dell Precision T7600 (x2)
Win 7 64-bit
32GB RAM
Adobe CC 2015.02 (as of 6/2016)
256GB SSD system drive
4 internal media drives RAID 5
Typically cutting short form from HD MP4 and P2 MXF.

[Gary Huff]

What is the physical source of your footage (i.e. hard drive, RAID, SD card, etc.)? Is it just doing this on this single clip? Is this the source footage straight from the camera or has it been transcoded? Have you tried rebooting your machine? Windows 7, 8, or 10?

[Jon Doughtie]

I stand corrected; just saw your signature. My apologies. Monday morning!

System:
Dell Precision T7600 (x2)
Win 7 64-bit
32GB RAM
Adobe CC 2015.02 (as of 6/2016)
256GB SSD system drive
4 internal media drives RAID 5
Typically cutting short form from HD MP4 and P2 MXF.

[Vu Tran]

update:
i figured it out, its because my webcam(with micro) has attached to the pc. In the audio hardware tab, i turned off the default input and everything going smooth now.

thank you for your time