Bests & Worsts Reviews from Amazon

Update to my review, when I posted my original review see below, Amazon called me within 5 minutes. Very helpful customer service person. We tried a process on the device. It fixed the AV sync issue. I told the person if this stayed stable I would revise my review. Sadly I do have to revise my review and say the process they had me do is not a permanent fix it would seem Each time I use the Firestick it is out of sync again. I even use my receivers sync option, I can get things synced but the next time I use the Firestick I have to either increase or decrease the sync time. When I use my previous 4K Fire product "not a Firestick, the flat square unit / the last generation I believe" Everytime I use it sound is in sync no issues. I admit the newer Firestick is faster and a bit better picture. I bought it for the DV option. But having to manually adjust sound each time I watch a movie or other source through it is not worth the effort. Returning the unit. Original review: Have had this about two weeks. This is my 3rd Fire TV type product. The other 2 worked great. Have the 4k Fire TV block model. Wanted this newer version because it has DV. Spent the day do AV stuff since the wife had to work. Got to the new model fire stick. Nothing I do will keep the sound synced with the video. I used AV on my tv and then bypassed the tv AV sync, watched different videos all ways the AV sync issue. Switched to my older fire product works great. The picture is better but the sound issue sucks going to return.