Hi
Yes i contact Mikrotik support and got this answer.
Hello,
Thank you for the report.
We are aware of such issue, where download speed on ether1 interface is significantly lower, compared to upload.
Our developers have already considered this issue, and it will be fixed in future releases, but unfortunately, I cannot share any ETA yet.
Meanwhile, we suggest using any of the switched interfaces (Eth2/3/4/5) as WAN interface.
We are sorry for the inconvenience caused.
Best regards,