Well-known hardware problem when running full-screen video at 720P resolution
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IMPORTANT NOTE FOR RASPBERRY PI USERS: LAC RUNS NICELY IN FULL-SCREEN, 720P VIDEO RESOLUTION, BUT DUE TO A WELL-KNOWN QUIRK OF RASPBERRY PI HARDWARE, THAT VIDEO CONFIGURATION GENERATES A LOT OF RADIO INTERFERENCE THAT IMPEDES WIFI OPERATION IN THE POPULAR 2.4 GHZ FREQUENCY BAND. ACCORDINGLY, WE RECOMMEND SWITCHING YOUR RASPBERY PI TO THE 5GHZ WIFI BAND unless your Raspberry Pi is located VERY close to your WiFi router.
Other options would be to directly wire your Pi to your router with an ethernet cable instead of WiFi, or to run LAC at some other video resolution. In our experience, running LAC at 1080p resolution demands too much of the Raspberry Pi, resulting in poor frame rates. Other resolutions may yield better results, but most users have best success with full-screen, 720P resolution while avoiding the 2.4 Ghz WiFi band.
Note that this quirk has nothing to do with LAC: no matter what you try to do with your Pi, you can expect WiFi connection problems if your video system is configured for full-screen, 720p resolution.