Hey! We’ll fix your Roku TV audio delay — the “voices don’t match lips” / audio out of sync issue is almost always one of these buckets:

1) Audio processing delay (TV “sound modes,” soundbar DSP, leveling/night mode, speech enhancement).
2) Connection path delay (HDMI ARC/eARC, optical/S/PDIF, Bluetooth, AVR pass-through).
3) App + format mismatch (Dolby Digital / Dolby Digital Plus vs PCM, auto-detect choosing a weird format, or one app buffering differently).

Quick questions so we pick the fastest recovery route (and avoid pointless resets):
• Is this a Roku TV (TCL/Hisense/onn./Sharp/Philips Roku TV) or a Roku player plugged into a TV?
• Audio output: TV speakers, soundbar, receiver/AVR, Roku Wireless Speakers, or headphones/Private Listening?
• Connection type: HDMI ARC/eARC, optical, or Bluetooth?
• Is lip-sync off in every app, or mostly Netflix/YouTube/Prime Video? Live TV too?
• Did it start after a Roku OS update, changing HDMI cables, enabling “Volume Mode,” or moving to a new HDMI port?

Reply with that, and I’ll give you a step-by-step full recovery guide that you can do at home.

Perfect details — and that explains why a reset didn’t “stick.” If the delay is mostly on a soundbar via HDMI ARC, the usual culprit isn’t a broken TV. It’s the audio pipeline: Roku output format + ARC handshake + soundbar processing.

Two important notes (this saves a lot of time):
• ARC can add timing if the TV is converting audio (example: Dolby Digital Plus → Dolby Digital, or bitstream → PCM).
• Many soundbars add delay when features like virtual surround, “3D audio,” “night mode,” “dialogue enhancement,” or auto-leveling are ON. That’s normal DSP latency, not a defect.

We’ll do this in the correct order: stabilize ARC/CEC → pick a known-good Roku audio format → remove processing features → then fine-tune lip-sync (only if needed).

Start with the “big wins” that fix most Roku TV audio out of sync cases in minutes.

Step 1 — Clean restart (not just power off)
On Roku TV: Settings > System > Power > System restart (or Settings > System > System restart). This clears stuck audio buffers better than a normal off/on.

Step 2 — Reset the ARC handshake (quick ARC/eARC recovery)
1) Turn off TV + soundbar.
2) Unplug both for 60 seconds.
3) Plug in the soundbar first, wait until it’s fully on, then plug in the TV and power up.

Step 3 — Temporarily disable extra processing (we’re testing “raw timing”)
• On the soundbar: disable surround/3D, night mode, voice enhancement, auto-leveling (just for the test).
• On Roku TV during playback: press * and set Volume Mode to Off for a quick test. Volume leveling can add processing delay on some setups.

After this, test one known clip in YouTube + one scene in Netflix. If lip-sync improves, we’ll re-enable features selectively so the delay doesn’t return.

Yes — you’re thinking in exactly the right direction. When lip-sync improves after disabling processing but “drifts back,” it’s often format switching (Auto choosing different codecs per app) or a flaky ARC/CEC negotiation.

Step 4 — Lock a stable Roku audio output (prevents app-to-app timing swings)
On Roku TV: Settings > Audio (or Audio output). Look for Digital output format and test in this order:
1) PCM (most predictable for lip-sync; best test mode)
2) Auto (if you want Dolby, but only if it stays stable)
3) Passthrough (good if your soundbar handles Dolby well; bad if it struggles or adds delay)

What we’re watching for:
• If PCM fixes Netflix lip-sync, your soundbar/ARC path likely adds delay when decoding Dolby (DD/DD+).
• If Auto causes the delay to come back, the TV might be switching formats between apps (Netflix DD+ vs YouTube stereo), which changes processing time.

Step 5 — Verify HDMI ARC basics (stability checklist)
• Make sure the soundbar is in the TV’s ARC HDMI port (often labeled ARC).
• Turn off “auto input switching” features you don’t need (some soundbars constantly renegotiate).
• If your TV has eARC and your soundbar supports it, enable eARC for better behavior — if not, keep it ARC but stable.

Do the PCM test first. It’s the quickest way to prove where the delay is coming from.

Great data point: if PCM fixes Roku TV audio delay, the delay is almost certainly introduced by Dolby decoding/processing somewhere in the chain (TV, ARC transport, or the soundbar).

About Private Listening audio delay: yes, it can be related, but it’s also normal because the phone stream is buffered over Wi-Fi. Private Listening is awesome, but it may have slight latency — especially on busy Wi-Fi or if the phone is far from the router.

Step 6 — Best “Dolby without delay” approach
Try this safe combo that often works on Roku TV + soundbar:
• Keep the soundbar processing features minimal (no “3D”/virtual surround while testing).
• Set Roku Digital output to Auto again, but keep Volume Mode Off and retest Netflix.
• If the delay returns only on Dolby content, set Digital output to Passthrough (so the soundbar does the decoding) and compare lip-sync.

Rule of thumb:
• If your soundbar decodes Dolby cleanly, Passthrough can reduce TV-side processing delay.
• If your soundbar adds delay when decoding, PCM stays the most stable “always in sync” mode.

Step 7 — Reduce Private Listening lag (easy wins)
• Put your phone on strong Wi-Fi (5 GHz if close, 2.4 GHz if far but stable).
• Close other heavy streaming on the same network during the test.
• If the audio is delayed only in Private Listening, that’s usually Wi-Fi buffering — not the TV’s ARC path.

When it “comes back,” it’s usually one of these repeat offenders:

• ARC handshake changes after a power event (TV or soundbar updates, power saving, CEC renegotiation).
• Processing features re-enable (Volume Mode toggled back on, soundbar sound mode changes, “Night” mode).
• App switches formats (stereo → DD+ → Atmos-capable streams), and Auto output changes timing.

Step 8 — Best practice: “set it and keep it stable”
• If PCM is stable: keep Digital output = PCM for day-to-day reliability (especially if lip-sync is your #1 priority).
• Keep Roku Volume Mode off most of the time; if you use it, re-check lip-sync after enabling leveling/night mode.
• Disable aggressive power-saving/auto-sleep features on the soundbar if it causes re-handshakes.
• Use the same HDMI ARC port and avoid frequent cable swapping (yes, it really matters for CEC stability).

If you want Dolby later: the most reliable Dolby setup is usually eARC + a soundbar that handles DD+/Atmos without adding delay. But PCM is absolutely a valid “fixed” solution for many homes.

Exactly — a factory reset is the last resort for lip-sync problems because the root cause is usually settings/handshake, not corrupted “TV memory.” Use this ladder instead:

First (fastest)
• Run System restart on the Roku TV.
• Power-cycle TV + soundbar (unplug 60 seconds) to refresh HDMI ARC/CEC.
• Confirm Roku Digital output is still your stable choice (PCM, if that’s your “known-good”).
• During playback press * and ensure Volume Mode didn’t flip back on.

Next (still better than factory reset)
• Re-run the TV’s HDMI-CEC/ARC setup (some soundbars have an ARC “reconnect” or “TV” input re-learn).
• Switch soundbar sound mode to “Standard” (lowest latency) for testing.

Factory reset is worth it only if:
• The Roku TV is glitching broadly (apps crashing, Wi-Fi dropping, audio cutting out) and restarts don’t stabilize it.

If you tell me your soundbar model, I can recommend the lowest-latency sound mode and the best ARC/eARC settings combo.

Summary: For Roku TV audio delay and lip-sync off, the biggest wins are (1) clean System restart, (2) refresh the HDMI ARC handshake, (3) disable processing (Volume Mode/leveling, surround/voice modes), and (4) lock a stable output format — PCM is often the most consistent “always synced” choice.

Want me to tailor the exact Roku audio settings to your soundbar model (ARC vs eARC, Dolby vs PCM, best low-latency mode)? Open the chat and an expert will guide you in real time.