Your quad flies locked-in at 40% throttle. Punch it past 80%, and it starts shaking like a paint mixer. The issue isn’t your PIDs — it’s that you’re running the same PID gains at 800g of thrust that you tuned at 300g. TPA progressively reduces PID strength as throttle increases, and it’s the single most under-configured setting in Betaflight. Here’s exactly how to set it.
TPA Configuration Guide
Understanding What TPA Actually Does
TPA reduces P and D gains on a linear curve starting at a throttle threshold you define. At the breakpoint throttle position (default 1350, which is roughly 65% on a 1000-2000 range), TPA begins attenuating. By full throttle (2000), the P and D terms are reduced by the TPA rate percentage you set.
The key insight most pilots miss: TPA only affects P and D. The I term is untouched because I corrects for steady-state error — wind, CG imbalance, bent props — and those forces still exist at high throttle. Reducing I at high throttle causes horizon drift during punch-outs that feels like a failsafe.
Step 1: Identify If You Need TPA
Fly a straight punch-out in acro mode. Watch for two distinct symptoms:
– High-frequency buzz (150-250Hz): Sounds like a mechanical rattle. This is excessive D gain at high RPM. TPA on D will fix this.
– Low-frequency wobble (30-80Hz): Looks like the quad is shuddering. This is excessive P gain at high throttle. TPA on P fixes this.
If your oscillations happen at all throttle positions, you have a tuning problem — not a TPA problem. Fix the base PID tune first.
Step 2: Set the Breakpoint
In Betaflight Configurator, go to the PID Tuning tab. Under Throttle and Motor Settings, find “TPA Breakpoint.” The default is 1350 (65% throttle). Lower this to 1250 (50% throttle) if you fly light 3-inch builds that hit high RPM quickly. Keep it at 1350-1400 for 5-inch freestyle builds where you fly in the mid-throttle range most of the time.
Step 3: Set the TPA Rate
Start at 10% (0.10) for D-only attenuation. Test with a punch-out. If oscillations persist, increase to 15%. If the quad feels loose or “floaty” at high throttle — like it’s on ice — you’ve gone too far. Back down 5%.
For quads that need P attenuation as well, you split the TPA between P and D using the CLI:
set tpa_rate = 15
set tpa_breakpoint = 1350
set tpa_mode = PD
save
The tpa_mode options: D (default, safest), PD (when both P and D oscillate at high throttle), P (rare — usually D is the culprit).
Step 4: Verify With Blackbox
Fly a punch-out with Blackbox logging at 1kHz. Open the log in Betaflight Blackbox Explorer or PID Toolbox. On the gyro_scaled graph, look at the noise floor during the punch-out:
– Without TPA: Noise amplitude increases 2-4x at full throttle
– With correct TPA: Noise stays flat across the throttle range
If you see noise spikes that align with a specific throttle position, your TPA breakpoint is off. Adjust by 50-100 points and re-test.
TPA Parameter Reference Table
| Setting | Recommended Starting Value | Effect if Too Aggressive | Effect if Too Conservative |
|---|---|---|---|
| tpa_rate | 10-15 (D only), 15-20 (PD mode) | Quad feels disconnected at high throttle, bounce-back on flips | Oscillations continue at high throttle |
| tpa_breakpoint | 1250 (light builds), 1350 (standard), 1400 (heavy) | PIDs reduce too early, quad feels loose in mid-throttle | PIDs reduce too late, oscillations from 50-65% throttle unaddressed |
| tpa_mode | D (default), PD (if P oscillates) | PD mode on a D-only problem over-attenuates P, causing drift | D-only on a P problem leaves low-freq wobble untouched |
| tpa_rate for 3-inch micros | 5-10 | Overly loose micro at speed, hard to control proximity | Minor — micros rarely need heavy TPA due to lower thrust-to-weight variance |
| tpa_rate for 7-inch long-range | 10-20 | Unstable in wind at speed because P is too attenuated | High-throttle wobble visible on HD footage |
Common Mistakes & How to Avoid Them
Mistake 1: Using TPA Instead of Fixing a Bad Tune
TPA is a band-aid for the specific problem of thrust-dependent oscillations. If your quad oscillates at 30% throttle, TPA isn’t active yet (default breakpoint is 65%) and won’t help. I’ve watched pilots crank TPA to 30% trying to fix a fundamental PID issue, then complain the quad “flies like a wet noodle.”
Fix: Tune the base PIDs first. Only add TPA when the quad flies well at cruise but oscillates at punch-out. The test is simple: if reducing throttle by 20% immediately stops the oscillation, you have a TPA-eligible problem.
Mistake 2: Setting TPA Rate Above 25%
At 30% TPA on PD mode, your quad loses two-thirds of its PID authority at full throttle. In a fast dive or power loop exit, that’s when you need control authority most. The quad will feel vague and delayed.
Fix: If you need more than 20-25% TPA, something else is wrong — motor/prop imbalance, frame resonance, or a mechanical issue. TPA above 25% masks a problem instead of solving it.
Mistake 3: Confusing TPA With Throttle Expo
TPA reduces PID gains. Throttle expo changes the throttle curve for stick feel. These have nothing to do with each other, but new pilots frequently adjust one thinking it’s the other.
Fix: TPA is in the PID Tuning tab. Throttle expo is in the Rates tab. If you want a softer throttle response around hover, adjust throttle expo. If you have oscillations at high throttle, adjust TPA.
Mistake 4: Not Re-Tuning After Motor or Prop Changes
You find the perfect TPA setting for your 2207 1850KV motors with 5-inch props. Then you switch to 2004 2900KV motors on a lighter frame. The old TPA setting is now wrong because the thrust curve — the relationship between throttle percentage and actual thrust — is completely different.
Fix: Any time you change motors, props, or battery voltage (4S to 6S), reset TPA to defaults (rate=0, breakpoint=1350, mode=D) and re-tune. The thrust curve shifted, and your old breakpoint is meaningless.
⚠️ Regulatory Notice: The flight recommendations in this article should be followed in accordance with the latest 2026 drone regulations in your country or region. Always verify local laws regarding flight altitude, no-fly zones, remote ID requirements, and registration before flying. Regulations vary significantly between the FAA (US), EASA (EU), CAA (UK), CAAC (China), and other authorities.
TPA sits at the intersection of PID tuning and throttle management. If you haven’t dialed in your base PIDs yet, start with our Betaflight PID tuning masterclass. For understanding how I-term dynamics affect your tune at different throttle positions, our I-Term Relax and Anti-Gravity guide covers the other half of the throttle-response equation.
A well-tuned quad starts with a quality flight controller that gives you clean gyro data. We stock F7 and H7 flight controllers at uavmodel that provide the low-noise gyro signal necessary for accurate TPA tuning at any throttle position.