Help me configure my home network (improve)

Hello,
I recently bought some mikrotik equipment:

main router CRS112-8P-4S-IN (192.168.10.1)
LTE router RBM33G + R11e-LTE6 with LTE passthrough and “management LAN” 192.168.10.x
two AP’s CAP AC + POE LAN - 192.168.10.y and 192.168.10.z (working in CAPSMAN mode)
and RB2011 connected over WLAN bridge 192.168.10.v.
What should I provide to ask you to check my configs?
Seems that the equipment is mainly connected by 1GbE LAN and thing speed’s are slow:
for instance from main router to 1st CAP

and from 1st CAP to main router

will be glad for any help
Maciek

So 8 Mbps on a 1 Gbps ethernet cable ? Just CRS112 and cAP ac involved in that path?

Check that cable ! (CAT5E, CAT6 ?, length within specs for 1 Gbps?).
Check ethernet interface setting and negotiation (status says 1000Mbps ?). Check interface error counters.
Check wire sequences in RJ45 connectors.

Otherwise: is there a network loop somewhere? Massive broadcast traffic? CRS112 too busy (cpu at 100%) ?

it’s CAT 5e cable lenght about 20m
I will try to replace that for new one and let you know.
Thank you.