If Black Ops 6 refuses to open or crashes right after the splash screen, start with the basics: verify game file integrity through Battle.net or Steam, update your GPU drivers, and make sure DirectX and Visual C++ redistributables are up to date. Corrupted shader cache is a common culprit — delete it manually from the game folder and let it rebuild on next launch.
Spikes above 100ms usually come from your local network, not the game servers. Connect via ethernet instead of Wi-Fi, close background apps eating bandwidth, and check if your router's QoS settings are throttling gaming traffic. Also try switching the in-game server region manually — sometimes the auto-selection picks a suboptimal one.
If you can't sign into your Activision account, clear the app cache, check that your system clock is synced correctly (wrong time breaks token validation), and try logging in through a browser first to rule out app-side issues.
Random freezes mid-match often point to RAM issues or overheating. Monitor GPU and CPU temperatures with HWMonitor during a session. If temps are fine, try lowering texture quality and disabling on-demand texture streaming — that feature causes stutters on slower storage drives.
If earned XP, weapon blueprints, or operator skins disappear after a session, the issue is usually a failed sync with Activision servers. Wait 10–15 minutes and relaunch — data typically restores itself. If not, contact support with your match history timestamp.