Timed out while waiting for handshake stuck on Outgoing: Writing KEXINIT

Hi
i've wroten a node js script that connects to AWS cli then create instances and after some timeout (120 seconds) attach the static ips then connect to them and on ready event exucute some commands.
this proccess goes well but some times it get stuck on 1 istance

Error: Timed out while waiting for handshake
    at Timeout._onTimeout (C:\nodejsprojs\ssh-test2\node_modules\ssh2\lib\client.js:695:19)
    at listOnTimeout (internal/timers.js:549:17)
    at processTimers (internal/timers.js:492:7) {
  level: 'client-timeout'
}

and after it detach ip and attach another one and after some timeout tries to connect but this error happen untill infinity.
i can connect to the same server with normal SSH but with ssh2 its not possible.
here is the debug logs:

C:\nodejsprojs\ssh-test2>node test.js
DEBUG: Local ident: 'SSH-2.0-ssh2js0.4.10'
DEBUG: Client: Trying 15.188.191.179 on port 22 ...
DEBUG: Client: Connected
DEBUG: Parser: IN_INIT
DEBUG: Parser: IN_GREETING
DEBUG: Parser: IN_HEADER
DEBUG: Remote ident: 'SSH-2.0-OpenSSH_7.6p1 Ubuntu-4'
DEBUG: Outgoing: Writing KEXINIT
DEBUG: Parser: IN_PACKETBEFORE (expecting 8)
DEBUG: Parser: IN_PACKET
DEBUG: Parser: pktLen:1076,padLen:6,remainLen:1072
DEBUG: Parser: IN_PACKETDATA
DEBUG: Parser: IN_PACKETDATAAFTER, packet: KEXINIT
DEBUG: Comparing KEXINITs ...
DEBUG: (local) KEX algorithms: curve25519-sha256@libssh.org,curve25519-sha256,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha1
DEBUG: (remote) KEX algorithms: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1
DEBUG: KEX algorithm: curve25519-sha256@libssh.org
DEBUG: (local) Host key formats: ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa
DEBUG: (remote) Host key formats: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
DEBUG: Host key format: ssh-ed25519
DEBUG: (local) Client->Server ciphers: aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm,aes128-gcm@openssh.com,aes256-gcm,aes256-gcm@openssh.com
DEBUG: (remote) Client->Server ciphers: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
DEBUG: Client->Server Cipher: aes128-ctr
DEBUG: (local) Server->Client ciphers: aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm,aes128-gcm@openssh.com,aes256-gcm,aes256-gcm@openssh.com
DEBUG: (remote) Server->Client ciphers: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
DEBUG: Server->Client Cipher: aes128-ctr
DEBUG: (local) Client->Server HMAC algorithms: hmac-sha2-256,hmac-sha2-512,hmac-sha1
DEBUG: (remote) Client->Server HMAC algorithms: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
DEBUG: Client->Server HMAC algorithm: hmac-sha2-256
DEBUG: (local) Server->Client HMAC algorithms: hmac-sha2-256,hmac-sha2-512,hmac-sha1
DEBUG: (remote) Server->Client HMAC algorithms: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
DEBUG: Server->Client HMAC algorithm: hmac-sha2-256
DEBUG: (local) Client->Server compression algorithms: none,zlib@openssh.com,zlib
DEBUG: (remote) Client->Server compression algorithms: none,zlib@openssh.com
DEBUG: Client->Server compression algorithm: none
DEBUG: (local) Server->Client compression algorithms: none,zlib@openssh.com,zlib
DEBUG: (remote) Server->Client compression algorithms: none,zlib@openssh.com
DEBUG: Server->Client compression algorithm: none
DEBUG: Outgoing: Writing KEXECDH_INIT
DEBUG: Parser: IN_PACKETBEFORE (expecting 8)

and again

C:\nodejsprojs\ssh-test2>node test.js
DEBUG: Local ident: 'SSH-2.0-ssh2js0.4.10'
DEBUG: Client: Trying 15.188.191.179 on port 22 ...
DEBUG: Client: Connected
DEBUG: Parser: IN_INIT
DEBUG: Parser: IN_GREETING
DEBUG: Parser: IN_HEADER
DEBUG: Remote ident: 'SSH-2.0-OpenSSH_7.6p1 Ubuntu-4'
DEBUG: Outgoing: Writing KEXINIT

Start at node_modules/ssh2/lib/client.js:695 and trace the handshake path from the KEXINIT and KEXECDH_INIT debug entries. Reproduce the timeout against the reported Ubuntu OpenSSH 7.6p1 server and compare the successful and stuck exchanges; done means the cause is identified with a verified fix or actionable diagnosis.