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Mars Labs

Smart TV Gaming-Mode Input Lag — Six Panels, 1080p / 4K / 120 Hz

Bodnar HDMI lag tester results across six 2026 flagship TVs in their Game / ALLM presets.

vsMars Labs·

For console and PC gamers the difference between 9 ms and 17 ms of TV input lag is the difference between competitive and unplayable. We measured six panels with a Leo Bodnar HDMI Input Lag Tester.

Setup

  • Bodnar tester firmware v2.4
  • Game / Game Optimizer / Auto Low Latency Mode enabled
  • HDMI 2.1 cable certified for 48 Gbps
  • Three measurements per mode, averaged

Input lag (ms, lower = better)

Panel1080p604K604K1204K120 + VRR4K120 + Dolby Vision
LG C512.712.96.46.512.1
Samsung S95F9.29.44.84.9n/a
Sony Bravia 8 II16.817.19.19.216.4
Panasonic Z95B14.214.67.87.914.1
Hisense U8QG11.111.46.16.210.9
TCL QM7K13.413.77.27.313.0

What stands out

Samsung's S95F leads the field — 4.8 ms at 4K120 is essentially indistinguishable from a dedicated gaming monitor. The QD-OLED panel + Samsung's Tizen Game Mode processing pipeline strip nearly all post-processing in Game Mode, leaving only the unavoidable HDMI 2.1 receive + display pipeline latency. The S95F is the closest a TV has come to "use it as a 65-inch gaming monitor" without compromise.

Sony's Bravia 8 II remains the laggiest flagship despite a focused Game Mode; Sony's processing pipeline prioritizes image quality (motion handling, upscaling refinement) even in Game Mode. For story-driven single-player gaming the Sony's output looks marginally better; for competitive multiplayer the 4-ms gap to a Samsung or Hisense is meaningful.

Lag perception thresholds

For reference, here's how lag values feel:

  • <8 ms: indistinguishable from a gaming monitor. Pro-level competitive FPS.
  • 8–15 ms: invisible for single-player and casual multiplayer; detectable in competitive FPS at high skill level.
  • 15–25 ms: noticeable in fast-twitch multiplayer (Counter-Strike, Valorant), invisible in everything else.
  • 25–40 ms: noticeable in any reflex-based gaming.
  • >40 ms: visible delay even in single-player; only acceptable for adventure games and broadcast TV.

Most flagship 2026 TVs are below 15 ms in Game Mode — the category has solved the lag problem that defined 2010s smart-TV gaming.

VRR — the secondary spec that matters

Variable Refresh Rate (HDMI Forum VRR and FreeSync Premium) eliminates screen tearing and reduces perceived stutter when frame rates fluctuate. Every panel in our test supports VRR with negligible latency cost (<0.5 ms). VRR is now table stakes; don't buy a "gaming TV" without it.

Dolby Vision gaming penalty

The Dolby Vision penalty is real — every panel that supports DV gaming adds 5–8 ms over standard HDR10. Dolby Vision requires per-frame dynamic metadata processing that adds a pipeline stage. For competitive FPS, disable DV in game mode and use HDR10 instead; you give up some scene-by-scene HDR refinement for a meaningful latency win. For cinematic single-player titles (God of War, Horizon, Cyberpunk story mode), keep DV on.

1080p vs 4K120 — the surprise finding

Most panels in our test had slightly higher lag at 1080p60 than at 4K120. Reason: 1080p signals are upscaled in the Game Mode pipeline (which adds a stage), while 4K120 passes through nearly untouched. If you have a PS5 Pro or Xbox Series X, set the console to 4K120 output even if the game renders at lower native resolution — the TV will scale less work.

Specific console / game combinations

  • PS5 Pro + Counter-Strike 2 (when ported): target 4K120 + VRR for the lowest pipeline latency.
  • Xbox Series X + Forza Motorsport: 4K120 + VRR is the right setting; ALLM activates automatically.
  • PC + competitive FPS (CS2, Valorant): use 1440p120 if your GPU can't sustain 4K120; lag is similar to 4K but framerates are higher.
  • PC + casual single-player: any 4K120 + Dolby Vision setting on a DV-capable TV.

Implication for buyers

Below ~15 ms is invisible for single-player gaming. Below ~8 ms matters for competitive multiplayer. If you play competitive Counter-Strike, Valorant, or Apex Legends regularly, the Samsung S95F or Hisense U8QG is the right pick. For everything else (story-driven games, racing sims, RPGs), any flagship 2026 OLED or mini-LED is fine.

See LG C5 vs Samsung S95F for the gaming-OLED head-to-head, or our best game consoles 2026 guide for the console pairings.

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