Three changes to eliminate periodic LED stutters on high-LED-count
WLED devices:
1. DDP PUSH flag: re-enable on the last packet of each frame so WLED
waits for the complete frame before rendering (prevents tearing
from partial multi-packet frames).
2. Health check: skip HTTP probe while a target is actively streaming
to the device — the device is clearly online and the HTTP request
to the ESP causes LED output to stutter.
3. Brightness polling: cache the value after first fetch and reuse it
on subsequent 2-second UI refreshes instead of hitting the ESP
every cycle.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
alexei.dolgolyov
350dafb1e8