Known Lag Problems
These problems are reported by real players. If your region or ISP is listed, a network optimizer is likely to help.
Middle East
30-60ms Gulf states, 80-180ms peripheral ME countries- Limited server infrastructure — Dubai is the only ME server location
- Players outside Gulf states (Egypt, Pakistan, Iraq) route through multiple hops to Dubai
- SBMM may place ME players on EU servers during off-peak, adding 100-150ms
- ISP infrastructure in some ME countries forces suboptimal international routing
South America (non-Brazil)
30-50ms Brazil, 80-150ms Andean/northern SA countries- Only one server location (Sao Paulo) for entire continent
- Players in Colombia, Venezuela, Peru route through Miami or Sao Paulo — both adding significant latency
- SBMM may connect to NA servers if SA player pool is thin for skill bracket
- ISP infrastructure in Andean countries often routes internationally through US before reaching Brazil
Oceania (Australia/New Zealand)
20-40ms to Sydney, 100-200ms when placed on Asia servers- Small player pool leads to long queue times or SBMM connecting to Asia servers
- Off-peak hours (late night/early morning) frequently routes to Singapore or Tokyo servers at 100-200ms
- New Zealand players add 20-30ms over Australian players to Sydney server
- Cross-Tasman routing can be inconsistent depending on ISP
Africa
20-50ms South Africa, 100-300ms rest of continent- Only Johannesburg server covers the entire continent
- Players outside South Africa (Nigeria, Kenya, North Africa) get 100-300ms
- North African players often get better ping to EU servers than to Johannesburg
- Undersea cable routing from East Africa to SA adds significant latency
What players commonly report
- Packet burst icons despite good internet connection (often caused by On-Demand Texture Streaming)
- SBMM placing players on distant servers for 'balanced' lobbies
- Peeker's advantage feels extreme due to 20 Hz tick rate
- Server performance degrades with 100+ players in early game
- Desync — dying behind cover or after sliding into safety
- No manual server region selection unlike most competitive games
- Evening peak hour lag spikes from ISP congestion
How to Fix It
Try these first — they're free and solve the problem for most people.
01 Disable On-Demand Texture Streaming
1. Open Settings > Graphics > Quality 2. Find 'On-Demand Texture Streaming' 3. Set it to Off 4. Restart the game 5. This stops the game from downloading textures mid-match, which competes with game traffic for bandwidth
Eliminates a very common cause of packet burst icons on otherwise good connections. This single change fixes apparent 'lag' for many players because the texture streaming eats bandwidth that game packets need.
02 Port forward UDP 3074 for Open NAT
1. Find your PC's local IP address (Settings > Network > Properties) 2. Open your router admin panel (usually 192.168.1.1) 3. Find Port Forwarding section 4. Add rule: UDP port 3074 to your PC's local IP 5. Add rule: UDP ports 3478-3480 to your PC's local IP 6. Save and restart router 7. In Warzone, check Settings > Account — NAT Type should show 'Open'
Open NAT improves matchmaking speed and server selection. Moderate or Strict NAT can force connections through relay servers, adding 20-50ms of latency.
03 Use Ethernet and close bandwidth-heavy apps
1. Connect PC directly to router with Ethernet cable 2. Disable WiFi adapter in Windows Settings > Network 3. Close streaming apps (Twitch, YouTube, Spotify) before playing 4. Pause cloud sync (OneDrive, Dropbox, Google Drive) 5. Pause any downloads (Steam, Windows Update)
WiFi adds latency (typically 2-10ms by user testing on consumer kit, see https://www.pcgamer.com/wired-vs-wireless-which-connection-is-best-for-pc-gaming/) plus variable jitter. Background downloads cause packet loss spikes. Together these changes can lower latency and remove jitter — measure with the in-game Telemetry overlay before and after.
General network tips (not Call of Duty: Warzone-specific)
04 Enable telemetry to check your real ping in-game
1. Open Settings during a match or from the main menu 2. Go to Interface tab 3. Scroll down to the Telemetry section 4. Set Telemetry to 'Custom' 5. Enable: Server Latency, Packet Loss, FPS 6. Your ping now shows on-screen during matches 7. Watch for spikes during gunfights — if ping spikes but FPS is stable, it's a network issue
Doesn't fix anything — but shows you exactly where the problem is. If your ping is stable at 30ms and you still lag, it's likely packet burst from On-Demand Texture Streaming (see next tip). If ping spikes to 100ms+ during peak hours, it's ISP congestion.
05 Flush DNS and reset network stack
1. Open Command Prompt as Administrator 2. Run: ipconfig /flushdns 3. Run: netsh winsock reset 4. Run: netsh int ip reset 5. Restart your PC 6. Launch Warzone and check if ping improved
Fixes routing issues caused by stale DNS entries or corrupted Windows network state. Quick fix that resolves sudden ping increases.
06 Set QoS priority for game traffic on your router
Access router admin panel and enable QoS. Prioritize UDP traffic on port 3074, or prioritize cod.exe by application if your router supports it.
Ensures game packets are processed first even when other devices are streaming or downloading
07 Delete shader cache to fix stuttering
Close the game. Navigate to Documents > Call of Duty > players and delete the 'shadercache' folder. Launch the game — it will rebuild shaders on next map load.
Fixes client-side stuttering that mimics network lag. Not a network fix but resolves a common misdiagnosed issue.
Regions with good connectivity
Players in these regions likely won't benefit much from a network optimizer.
- North America — 4+ server locations (LA, Dallas/Chicago, NY/Virginia, Miami) plus Canadian servers provide excellent coverage. Most NA players get 20-50ms. Dense server infrastructure means SBMM rarely needs to send players far.
- Western Europe — London, Amsterdam, Frankfurt, Paris provide dense coverage. Most Western EU players get 10-40ms. Good ISP peering across major European providers.
- East Asia (Japan/Korea) — Tokyo server provides excellent coverage for Japan and South Korea. 10-30ms typical for local players.
Still lagging? The problem is likely your ISP's routing to the game servers.
PingAim detects Call of Duty: Warzone automatically
No manual config. PingAim identifies Call of Duty: Warzone by process name and routes it through your fastest connection using a kernel-level WFP driver.