High latency in LAN connections

Hi there!

Just got myself a brand new UDR7 - set it up - and whilst everything seemed to be fine at the high-level, it seems I have quite a big LAN latency, example:

ping 192.168.1.45
PING 192.168.1.45 (192.168.1.45): 56 data bytes
64 bytes from 192.168.1.45: icmp_seq=0 ttl=64 time=89.065 ms
64 bytes from 192.168.1.45: icmp_seq=1 ttl=64 time=5.811 ms
64 bytes from 192.168.1.45: icmp_seq=2 ttl=64 time=28.747 ms
64 bytes from 192.168.1.45: icmp_seq=3 ttl=64 time=50.178 ms
^C
--- 192.168.1.45 ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 5.811/43.450/89.065/30.655 ms

Things get even more interesting - i have high latency even when i ping the gateway (the router itself), even though with my old simpleton router LAN communication latency was < 1 ms. Same happens for both wired and wireless connected devices, also for cross-vlan connections.

I have had this behaviour with the initial, out of the box firmware versions, and also after updating to:

• UniFI OS 4.3.9 (latest)
• Network 9.5.21 (latest)

I have tried the usual... restarts and stuff, but it seems pretty strange for a 200$+ router to have such an issue, especially when not under load or in any kind of a "strange" or "exotic" setup.

Did any of you guys have the same behaviour, and if so, is there a way to fix this up?

Thanks a lot!