Traffic memory is low on fortigate - Firewalls

i see on my fortigate (80c) on system events "traffic memory is 95% full" (see attached file).what is the recommended actions ? | Firewalls

Security appliance - with 3 years 24x7 FortiCare Support + 3 years FortiGuard Unified Threat Protection (UTP) - 10 GigE - front and side to back

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Fortinet Fortigate Firewalls Indeni Network Security Solutions

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