I have a 2012 Prius v Model 5 without Tech Pkg. While streaming music from my iPod Touch via Bluetooth, the sound tends to skip or speed up as if you are pressing fast forward intermittently. Sound is fine when hard wired via USB. I don't recall this happening when the car was new. It's driving me nuts! Anyone had this happen? Thanks in advance!
Try deleting the pairing between the phone and in-car system and then re-pair them. That should do the trick.
I've found that if I have my wireless "detection" up on my phone, it interferes with the Bluetooth and causes it to do what the OP describes, especially in a WiFi hotspot that I'm not signed in to. Of course, I have an Android, so this may not apply, but try turning off your Wifi.
I have a problem as well using my ipod. I have abruptly lost my ipod. It just quit. I think that my system may have shorted out my ipod. Has anyone else had this issue?