What To Do After You’ve Run a Test
You’ve completed a latency test — great! Now turn your results into actionable steps that improve gaming, streaming, and calls.
1) First, interpret your results
- High latency under load (good idle → bad under download/upload): This is bufferbloat — your router is queuing packets too long.
- High jitter: Large variation between pings; real‑time apps (games/VoIP) will feel choppy.
- Packet loss: Usually physical/signal issues (Wi‑Fi interference, bad cable, modem issues, or ISP congestion).
- Random spikes when idle: Often Wi‑Fi, DFS channel moves, background updates, or path instability.
2) Fix Wi‑Fi first (most common culprit)
Fast win: Test on Ethernet. If results are perfect wired but bad on Wi‑Fi, you’ve found the bottleneck.
- Use 5 GHz or 6 GHz; avoid crowded 2.4 GHz.
- Relocate the router higher and central; avoid microwaves and thick walls.
- Shorten mesh backhaul distance or use wired backhaul.
3) Fix bufferbloat
Grades B/C/D/F indicate congestion queuing. Try these:
- Enable SQM (Cake/FQ‑Codel): Many modern routers support it (Ubiquiti, AsusWRT‑Merlin, OpenWRT, MikroTik with config).
- Upgrade hardware: ISP all‑in‑ones often lack effective queue management. Look for SQM‑capable gear.
- Reduce background load: Pause cloud backups, big downloads, or auto‑uploads during gaming/calls.
4) Tame jitter and spikes
- Optimize AP placement; minimize obstructions.
- Update router firmware; reboot if memory leaks cause instability.
- Limit device crowding; older routers struggle with 20+ active devices.
5) Eliminate packet loss
- Retest on Ethernet; if loss disappears, it’s Wi‑Fi.
- Replace suspect Ethernet cables (Cat5e/Cat6).
- Power‑cycle modem and router.
- Inspect coax/fiber connectors and splitters; reseat or replace.
- Contact your ISP if loss persists — it may be upstream.
6) Re‑test after each change
Watch for improved bufferbloat grade, jitter, spikes, and packet loss. Small, consistent gains add up.
7) When it’s time to upgrade
If issues persist, consider equipment that supports SQM (Cake/FQ‑Codel) and offers strong Wi‑Fi (Wi‑Fi 6/6E).
Tips for specific use cases
Gamers
- Prefer Ethernet. If Wi‑Fi, use 5/6 GHz and keep the AP close.
- Prioritize your device in router QoS; stop large downloads/updates.
Work‑from‑home calls
- Target jitter < 10 ms and 0% packet loss.
- Pause sync clients during meetings and use 5/6 GHz or Ethernet.
Learn More
- What is Bufferbloat? Causes, symptoms, and how SQM fixes it
- How to Set Up SQM (Cake / FQ‑Codel) on Popular Routers
- Wi‑Fi Optimization Guide: Best Bands, Channels, and Placement Tips
- How to Diagnose and Fix Packet Loss (Wi‑Fi, Ethernet, ISP issues)
- How to Reduce Jitter, Spikes, and Unstable Ping
- Low‑Latency Gaming Setup: Best Practices for Consistent Ping
- Work‑From‑Home Network Checklist for Smooth Video Calls
When you’re ready, return to the test page and re‑run the test to validate improvements.