system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does Bluetooth get in sync with videos and sound even though Bluetooth has quite a big delay?
gpt
Cache.  If/when you're streaming over bluetooth it's not in real time.  It's delayed just enough to copy enough of the file to the display device so that the program can be relatively confident it will play without errors.  With proper transfer speeds and compression, the delay can be almost imperceptible to the viewer, but in computer timing small portions of a second can be more than enough time to "stockpile" enough data to present it smoothly

**grammar and spelling*