The speed of the Mikrotik router jumps back and forth, what should I do?

Question

Mikrotik

SOLVED!!!!!!!!
The whole problem was that the speed of the router just jumps, according to the contract it should be 2 megabytes / s, but during the speed test it constantly jumps, and sometimes it goes up to 2 mb / s, but then it rolls down again, it was also connected through the provider's cable, and on it the same garbage. I have already tried calling the ISP, they say everything is working fine. What I want to note is that this didn’t happen before, namely, before the backup of the settings to certain ones, I already reconfigured myself (in the config, those settings that I did according to one article). The backup was made for the reason that they saw the devices of the IP address (perhaps while I was climbing and thinking that the Internet is so slow, but it turns out that we only had to pay for it, I pressed something and everything, after which and there was a backup solution). (We paid for internet). Basically, I really need help.
Config (static ISP connection)
INTERFACE ETHERNET :
# NAME MTU MAC-ADDRESS ARP SWITCH
0 R ;;; WAN
ether1 1500 64:D1:54:53:F5:5F enabled switch1
1 RS ;;; LAN
ether2 1500 64:D1:54:53:F5:60 enabled switch1
2 S ether3 1500 64:D1:54:53:F5:61 enabled switch1
3 S ether4 1500 64:D1:54:53:F5:62 enabled switch1
4 S ether5 1500 64:D1:54:53:F5:63 enabled switch1
INTERFACE BRIDGE PORT: # INTERFACE BRIDGE HW PVID PR PATH-COST INTERNA... HORIZON
0 H ether2 bridge-local yes 1 0x 10 10 none
1 IH ether3 bridge-local yes 1 0x 10 10 none
2 IH ether4 bridge-local yes 1 0x 10 10 none
3 IH ether5 bridge-local yes 1 0x 10 10 none
4 I wlan1 bridge-local 1 0x 10 10 none
5 wlan2 bridge-local 1 0x 10 10 none

Answer 1

Command as a thread like this
interface ethernet print stats-detail brief stats
Look for lines with the word drop/error. If they are on the interface towards the provider - knock them on the jug.