Audio Delay When Connecting Both SoundTouch 10 and SoundTouch 300 Sounbar to TV
I've purchased a SoundTouch 10 speaker and a SoundTouch 300 soundbar and I'm having audio (and/or audio-video) synchronization issues when connecting them to my Samsung Tizen Smart TV. I've tried connecting them in various ways using optical cable, HDMI and Bluetooth. Using each of the configurations bellow, if "Video Sync" option (under "Group Settings" in the SoundTouch App) is on, the audio played through one of the speakers is delayed by about 2-3 seconds! If "Video Sync" option is off, the audio appears to be synced between the two speakers but they are completely out of sync with respect to the video.
Configurations tried so far:
1) Connect TV to SoundTouch 300 via optical or HDMI and then use the "Play All" feature from the SoundTouch App.
2) Connect TV to SoundTouch 300 via optical or HDMI and connect TV to SoundTouch 10 using Bluetooth.
3) Connect TV to SoundTouch 300 via Bluetooth and then use the "Play All" feature from the SoundTouch App.
4) Connect TV to SoundTouch 10 via Blutooth and use the "Play All" feature from the app.
With each of the configurations above I can get TV's audio to play through both speakers, but with unacceptable sync issues mentioned above. Is this a bug in the hardware or software? Should I return the speakers and try a new set? Is there another configuration that I haven't thought of that would work? What exactly is the purpose of the "Video Sync" option in the "Group Settings"?