hey there, 

first things first, please be patient. im all new to the whole wifi thing and learning while doing.

recently i changed from using Ubiquiti UniFi AP AC PRO to 2x TP-Link EAP653.

i am running Omada Controller software 5.7.4 on an dedicated debian system.

since the hardware change, i am experiencing unreliable wifi latency + connection loss (not very often).

it is most noticeble, while i ssh into a local server and use mc to scroll through large directorys.

the cursor starts to stutter, no smooth progress.

this was not the case while the UniFi AP was in use.

ping from macbook to router 

64 bytes from 10.10.10.1: icmp_seq=596 ttl=63 time=6.056 ms
64 bytes from 10.10.10.1: icmp_seq=597 ttl=63 time=20.841 ms
64 bytes from 10.10.10.1: icmp_seq=598 ttl=63 time=5.273 ms
64 bytes from 10.10.10.1: icmp_seq=599 ttl=63 time=31.073 ms
64 bytes from 10.10.10.1: icmp_seq=600 ttl=63 time=5.134 ms
64 bytes from 10.10.10.1: icmp_seq=601 ttl=63 time=7.562 ms
64 bytes from 10.10.10.1: icmp_seq=602 ttl=63 time=6.329 ms
64 bytes from 10.10.10.1: icmp_seq=603 ttl=63 time=5.616 ms
64 bytes from 10.10.10.1: icmp_seq=604 ttl=63 time=5.289 ms
64 bytes from 10.10.10.1: icmp_seq=605 ttl=63 time=6.489 ms
64 bytes from 10.10.10.1: icmp_seq=606 ttl=63 time=6.210 ms
64 bytes from 10.10.10.1: icmp_seq=607 ttl=63 time=6.837 ms
64 bytes from 10.10.10.1: icmp_seq=608 ttl=63 time=5.424 ms
64 bytes from 10.10.10.1: icmp_seq=609 ttl=63 time=5.096 ms
64 bytes from 10.10.10.1: icmp_seq=610 ttl=63 time=7.056 ms
64 bytes from 10.10.10.1: icmp_seq=611 ttl=63 time=22.687 ms
64 bytes from 10.10.10.1: icmp_seq=612 ttl=63 time=4.513 ms
64 bytes from 10.10.10.1: icmp_seq=613 ttl=63 time=112.697 ms
64 bytes from 10.10.10.1: icmp_seq=614 ttl=63 time=3.518 ms
64 bytes from 10.10.10.1: icmp_seq=615 ttl=63 time=45.254 ms
64 bytes from 10.10.10.1: icmp_seq=616 ttl=63 time=5.190 ms
64 bytes from 10.10.10.1: icmp_seq=617 ttl=63 time=5.336 ms
64 bytes from 10.10.10.1: icmp_seq=618 ttl=63 time=3.343 ms
64 bytes from 10.10.10.1: icmp_seq=619 ttl=63 time=4.506 ms
64 bytes from 10.10.10.1: icmp_seq=620 ttl=63 time=5.475 ms
64 bytes from 10.10.10.1: icmp_seq=621 ttl=63 time=6.820 ms
64 bytes from 10.10.10.1: icmp_seq=622 ttl=63 time=5.524 ms
64 bytes from 10.10.10.1: icmp_seq=623 ttl=63 time=3.661 ms
64 bytes from 10.10.10.1: icmp_seq=624 ttl=63 time=5.779 ms
64 bytes from 10.10.10.1: icmp_seq=625 ttl=63 time=3.236 ms
64 bytes from 10.10.10.1: icmp_seq=626 ttl=63 time=7.000 ms
64 bytes from 10.10.10.1: icmp_seq=627 ttl=63 time=7.847 ms
64 bytes from 10.10.10.1: icmp_seq=628 ttl=63 time=67.049 ms
64 bytes from 10.10.10.1: icmp_seq=629 ttl=63 time=107.072 ms
64 bytes from 10.10.10.1: icmp_seq=630 ttl=63 time=173.573 ms

ping from windows laptop to router

Reply from 10.10.10.1: bytes=32 time=6ms TTL=63
Reply from 10.10.10.1: bytes=32 time=62ms TTL=63
Reply from 10.10.10.1: bytes=32 time=78ms TTL=63
Reply from 10.10.10.1: bytes=32 time=6ms TTL=63
Reply from 10.10.10.1: bytes=32 time=9ms TTL=63
Reply from 10.10.10.1: bytes=32 time=12ms TTL=63
Reply from 10.10.10.1: bytes=32 time=16ms TTL=63
Reply from 10.10.10.1: bytes=32 time=24ms TTL=63
Reply from 10.10.10.1: bytes=32 time=10ms TTL=63
Reply from 10.10.10.1: bytes=32 time=7ms TTL=63
Reply from 10.10.10.1: bytes=32 time=42ms TTL=63
Reply from 10.10.10.1: bytes=32 time=83ms TTL=63
Reply from 10.10.10.1: bytes=32 time=28ms TTL=63
Reply from 10.10.10.1: bytes=32 time=25ms TTL=63
Reply from 10.10.10.1: bytes=32 time=10ms TTL=63
Reply from 10.10.10.1: bytes=32 time=5ms TTL=63
Reply from 10.10.10.1: bytes=32 time=9ms TTL=63
Reply from 10.10.10.1: bytes=32 time=5ms TTL=63
Reply from 10.10.10.1: bytes=32 time=9ms TTL=63
Reply from 10.10.10.1: bytes=32 time=14ms TTL=63
Reply from 10.10.10.1: bytes=32 time=10ms TTL=63
Reply from 10.10.10.1: bytes=32 time=5ms TTL=63
Reply from 10.10.10.1: bytes=32 time=7ms TTL=63
Reply from 10.10.10.1: bytes=32 time=5ms TTL=63
Reply from 10.10.10.1: bytes=32 time=7ms TTL=63
Reply from 10.10.10.1: bytes=32 time=5ms TTL=63
Reply from 10.10.10.1: bytes=32 time=7ms TTL=63
Reply from 10.10.10.1: bytes=32 time=7ms TTL=63
Reply from 10.10.10.1: bytes=32 time=11ms TTL=63
Reply from 10.10.10.1: bytes=32 time=15ms TTL=63
Reply from 10.10.10.1: bytes=32 time=18ms TTL=63
Reply from 10.10.10.1: bytes=32 time=7ms TTL=63
Reply from 10.10.10.1: bytes=32 time=72ms TTL=63

signal looks not that bad from within omada

this capture was made whith the macbook from the living room.

WeylandYutani is the first EAP, CyberdyneSystems the 2nd (more over to the master bedroom on the other side of the house) airCube-502 is my basement workbench AP.

any advice on how to improve my wifi is appreciated.