- FPS/refresh/decode counter via LVGL monitor_cb (printed once per second)
- LVGL logging off, per-loop memory prints removed, loop delay 5 -> 1 ms
- double draw buffer (render while previous chunk is flushed)
- compile with -O2 instead of -Os
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>