I tried to solve problem with fragmentation and configured parameters as below. The same is on the router on the other side.
ip mtu 1438
I configured GRE over IPSEC (transport mode), and problem is PMTUD. It seem to be broken. I don't have firewall between router. Ping to other side with large packet and set DF bit is unsuccesful. With sniffer I saw one ICMP request sent and received ICMP unreachable packet but subsequent ping packets is again unsuccesful and ping packets was not seeing with sniffer.
Any suggestions is helpfull!