ios 8.3/iPhone 6 problem connecting to Pioneer car stereo

Pioneer model AVH-X2600.

There are two ways to connect to my car stereo to play music: iPod mode or Bluetooth. Prior to 8.3 the BT connection would automatically pause my music after about 10 seconds. After I push Play on the stereo it would continue on without issue. Following the 8.3 update, after about 10 seconds on the BT connection there is this awful scratching/skipping noise, not unlike a skipping cd. But after 5-10 seconds of that, everything is back to normal.

Prior to 8.3 the iPod mode would take a good 20 secs to connect, but then everything would play normally. Now, with 8.3, it won't connect at all.

I don't have any problems with BT connections to other speakers, so maybe this is a Pioneer problem?? Anyone else having this same problem?