Anynet+ is a Samsung technology, and it may be conflicting with the Panasonic player. I would recommend that you try disabling Anynet+ on the TV to see if you're able to get the proper performance of the Blu-Ray player.
Does that help?
I recently purchased this tv, but cannot get it to recognize my Panasonic Blue Ray. When going to Anynet+, it will turn on the Blue Ray, but the message says "HDMI settings are reset because a new HDMI device is connected. It is recommended to execute the Setup Navigator from the setup screen to change the HDMI settings. Press Display to clear this message". The Blue Ray message reads "Resume" but I cannot get any futher with this and my Blue Ray will not play. What am I not doing?