Audio tracks suddenly slowed down

[santuario70]

Hey guys - I've seen a few posts about this type of issue with Logic Pro X and some attempted fixes, but none have worked for me. Basically, in two of my projects now, most of the audio tracks (not midi - these are all mostly recorded guitar lines, some bass lines) are suddenly slower than the original recording, getting slowly out of sync with the rest of the project. I've tried program restarts, computer reboots, latency changes, buffer size change and back again, checking to see if the problem is bus dependent (doesn't seem to be), etc. So far nothing has worked and this has rendered these two projects worthless.

 

Along these lines - not sure if it is related or not - I noticed that with my I/O buffer size set at 32, the resulting roundtrip latency is indicating 14.1ms, which seems high. I saw another user with his buffer set at 128 and he was getting something like 7ms ... 

 

I'm using Logic Pro X version 10.3.1.

 

Here is the info on my mac:

macOS Sierra

10.12.4

MacBook Pro (Retina, 15-inch, Mid 2014)

  Model Identifier: MacBookPro11,3

  Processor Name: Intel Core i7

  Processor Speed: 2.5 GHz

  Number of Processors: 1

  Total Number of Cores: 4

  L2 Cache (per Core): 256 KB

  L3 Cache: 6 MB

  Memory: 16 GB

  Boot ROM Version: MBP112.0138.B25

  SMC Version (system): 2.19f12

[benrichards]

1. What is your audio interface?
   
2. Are you recording in Low Latency mode?
   
3. Are you running lots of plugins while tracking?
   
4. Lastly, just to rule it out, have you confirmed that your tempo is fixed throughout?

[JakobP]

Regarding your latency question, does it change when plugging headphones into your macbook ?