Can Symantec Antivirus Freeze Multiplayer Games Only? Unlikely

It's highly unlikely Symantec (Norton) would freeze only multiplayer games while single-player runs fine.

Why Antivirus Usually Affects Both Equally:

• Scans all processes/files uniformly—no "multiplayer" flag.
• Real-time protection hooks into filesystem/network APIs used by all apps.

Why Multiplayer Feels More Affected:

• Network Sensitivity: Multiplayer needs consistent low latency. AV scanning outgoing/incoming packets (SSL inspection, firewall) adds jitter/packet loss → rubber-banding, disconnects, perceived "freeze."
• Anti-Cheat Conflict: Games with kernel anti-cheat (Vanguard, BattlEye, EAC) clash with AV kernel drivers → crashes/freezes only when anti-cheat loads (multiplayer modes).
• Resource Contention: Multiplayer + voice chat (Discord) + browser + AV scan = CPU/RAM saturation → stutters.

Troubleshooting Steps:

1. Test Offline Mode: Launch game in offline/solo mode. If stable, it's network/AV interaction.
2. Add Exclusions: In Symantec → Settings → Firewall/Network → Trust the game's executable folder & steam.exe/origin.exe/battle.net.exe.
3. Disable SSL/HTTPS Scanning: Settings → Firewall → Intrusion Prevention → Configure → Uncheck "Scan SSL/TLS."
4. Game Mode / Silent Mode: Enable in Norton to suppress background tasks during full-screen apps.
5. Update GPU Drivers & Game: Often the real culprit.
6. Clean Boot: msconfig → Selective startup → test.

If freezing persists only in multiplayer after exclusions, it's likely network instability, server issues, or anti-cheat conflict—not the AV itself.