Strange question. Situation: I tracked vocals on top of a backingtrack. But while mixing, i notice something is up. Later in the song, when i play it back, the vocal parts doesn't line up with the backing track. (While the first parts were no problem!) Ok, I nudge them up in their place. When i done that with alle the pieces, then the middle parts skipped again. They keep shifting in timing. Is this a problem with a setting (snap or something) that isn't right? I never had that before. I'm pretty sure it's no latency because i didn't had that problem at the first minute or so from the track. System: Reaper v5 RME hdsp CPU use: 2% Driver Sample rate 64 What's up?

hi ...just a guess, could it be that you have "ripple editing per track" set enabled?? greetz Alex

@Alex, thanks for the quick reply! I'm not in the studio right now, but i'll check it tonight. I'll let you know!

you're welcome please do also check the samplerates of your project/ backing track and vocal track...normally reaper resamples them if there are differencies you can check that in the items properties afaik. alex

I checked the sample rates and the ripple editing and they both seem fine. I played around a bit with the buffer size and didn't get good results either. I'm getting kinda desperate at this point. Anyone have ideas? Edit: if you pm me your email adres, i can send the files in dropbox to you. Thanks a lot!

@augerJ I have the issue even when the fx are bypassed. I don't think it's a plugin problem. I recorded the vocal in pieces and now i'm putting them together. So it's sliced in a dozen pieces or so. The shift is timing is like this: i check that the vocal part 1 is alligned with the backtrack and it is. I check the vocal part 5 which is good aligned, i nudge it up (this is a seperate piece) so that it fits like a glove when i replay it. Then i do the same with vocal part 7. It doesn't align, i move it or nudge it until it aligns. Then when i play the piece, vocal part 5 is like a second late. Then i fix part 5 again, but parts 7, 8 , 9 isn't aligned. Strange thing is, part 1 is always very nicely aligned. I tried aligning part 9 first, but as soon as i move part 5 i keep getting problems.

Ok, just toyed around some more. if i start the track from the beginning, it's alligned nicely. If i put my start somewhere else, it's off. That could explain why the first one is always right. To listen to that, i start from the beginning. If i start to listen say, 7 seconds in, the first part doesn't seem aligned either. I think that's either the driver or the computer giving problems with playback?

Yeah, the audio file is completely sliced up. So everypart is a part. When i checked back it looks like it plays normally if i start the track from the beginning, but when i start it from elsewhere, the vocal file plays back too slow or too fast. So i think it isn't so much a problem of alligning, but the playback of the individual parts. I checked and didn't saw any stretch markers. Strange thing is that the backing track plays back normally. Thanks so much for the help already! appreciate it!