Ping spikes on LAN

[Dredex]

Hi, I have ping spikes every few minutes on the LAN side and I do not know why. There is little traffic on the LAN side, CPU is ~1-2% usage, I have disable all offloading features, disabled/enabled PowerD. Sometimes it spikes after 1-2 hours once or twice. Tried to play some games on Geforce Now and every time it spikes the game freezes, sometimes its unplayable. On clients with 10Gb/s connections we can max our WAN's and there are no spikes, ping is <1ms. If we ping our WAN addresses from outside there are no spikes.

Supermicro X11SSL-F
CPU: E3-1230 v6
RAM: 4GB (17% usage)
Storage: SSD Kingston 120GB (6% usage)
WAN: 2 x 1Gb/s - I210-AT (Load Balance 1Gb/s)
LAN: Intel X520-DA2 with 4 vlans
Switch DLink DGS-1510-52

PfSense 2.4.4 P3
Packages

• acme
• haproxy
• iperf
• ntopng
• mailreport
• nmap
• openvpn-client-export
• zabbix-agent44

192.168.100.1 is the LAN interface

Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time=1620ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time=756ms TTL=64
Reply from 192.168.100.1: bytes=32 time=602ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time=1485ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64

[Dredex]

The problem is fixed after removing ntopng.
No more spikes.

Thank you