SSH'ing takes forever

Hello
Dropbear host takes forever to connect.
This one is MT7620 and OpenWrt SNAPSHOT r11320-2bc7c519dc

debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for localhost
debug2: ssh_connect: needpriv 0
debug1: Connecting to ####### [########] port 10639.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug3: Not a RSA1 key file #######.
debug2: key_type_from_name: unknown key type '-----BEGIN'
debug3: key_read: missing keytype
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug2: key_type_from_name: unknown key type '-----END'
debug3: key_read: missing keytype
debug1: identity file /somefile type -1
debug1: identity file /somefile-cert type -1 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
(Above line takes forever like 5 minutes.)
(or this could be the below line)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
debug1: Remote protocol version 2.0, remote software version dropbear
debug1: no match: dropbear
debug1: Enabling compatibility mode for protocol 2.0


There is no errors though.

Looks like your keys are either in the wrong format for dropbear, or are corrupt.

That private key for 2 models, MTK and QCA, QCA works within 5 seconds. Only difference is QCA is 18.06.1.
and trying the connection from the same client.

I will try to either use the stable version or use openssh on MTK or check Authorized keys, I dont remember if I added the client to the new MTK authotirized keys, but I think I did or it shouldn't work after 5 minutes. I will double check if that was the reason.

Thank you Jeff.