How to fix lag and high ping | Diagnose it, then fix it

"I saw them first and still lost the fight." "Enemies teleport." "My shots don't register." In a tactical FPS like Sudden Attack: Zero Point (SAZ), these symptoms usually point at your network, not your PC. SAZ is a light game to run — a GTX 1060 3GB and 16GB of RAM clear the bar — which makes your connection the more likely bottleneck.

This guide goes in the order you should actually work through: diagnose it → apply the free fixes → escalate only if nothing helps.

What ping should you aim for?

Ping is the round trip time to the server in milliseconds — lower is better. For SAZ, around 30ms is perfectly playable as long as it stays stable.

Ping	What it feels like
Under 15ms	Ideal. Fibre plus a wired connection
Under 30ms	Comfortable. Plenty for SAZ if it's stable
Under 50ms	Playable, but you'll feel a step behind at times
Over 50ms	You lose gunfights you should win. Worth fixing

How to measure:

Use the in-game ping display if there is one. That's the number that actually matters
To test the line itself, open Command Prompt on Windows (search for "cmd") and run ping -n 20 8.8.8.8. The average is your ping and loss is packet loss
Measure during the day and again at night (roughly 9-11pm). If it only gets bad at night, the problem is congestion

Is it your PC or your network?

Check two things before you change anything:

Choppy visuals, low FPS → that's your PC. Turn down the graphics load in the settings guide instead
FPS is fine, but enemies teleport and shots don't land → that's your network. Keep reading (only getting bad at night is a classic network symptom too)

Free fixes, in order of impact

Work down this list.

Use a wired LAN cable (biggest win by far). Cat5e or better is plenty
If you must use Wi-Fi, connect to the 5GHz band and stay in the same room as the router
Turn on IPv6 if your ISP offers it. Modern IPv6 routing often bypasses the equipment that gets congested in the evening. Check your ISP's account page and whether your router supports it
Restart or replace your router. If restarting fixes it temporarily, the router is the problem. Five-year-old and ISP-supplied budget units are common culprits
Stop anything else eating bandwidth: Windows Update, game launchers downloading in the background, cloud sync, someone else streaming video
Update your LAN drivers and OS. Old network drivers cause more instability than people expect

After each change, re-measure at night using the method above.

Still bad at night? It's your ISP

If you've done all of the above and it's still only bad in the evening, the congestion is on your ISP's side, not inside your home. At that point your options are:

Ask your ISP whether a less congested connection type is available on your plan (in many countries this means switching to a newer routing method)
Switch to a different ISP or plan

About SAZ's servers

As of July 2026, Nexon has not announced SAZ's server locations or a recommended spec — only the minimum requirements. The original Sudden Attack had Japanese servers, so ping conditions for players outside Japan will only become clear once early access opens on 30 July. We'll update this article as soon as we know more.

Keep in mind that ping is not the only thing driving how fast you react. Stable frame rates (settings) and monitor and mouse latency matter too. Once your connection is sorted, those are the next places to look.

Summary

Diagnose first. Low FPS is a PC problem; teleporting enemies with good FPS is a network problem
Aim for under 30ms and stable — that's enough for SAZ
The two fixes that do the heavy lifting are a wired connection and enabling IPv6 if your ISP supports it
Only bad at night means congestion. If in-home fixes don't help, it's on your ISP's side
SAZ's server details are unannounced as of July 2026 — we'll update once early access starts