A:Answer Hi Nathan. aptX reduces the "data conversion time, also referred to as "sound delay" or "latency time”. When you have only one transmission channel from sender to receiver, “latency time” is of no concern and can be ignored. However, when more than one parallel sound channel, this is an important issue. The LG UK6300PUE 4K HDR Smart LED UHD TV w/ AI ThinQ® - 43" Class (42.5" Diag), Model # 43UK6300PUE does not support aptX Low Latency...^IFV