Mariadb High CPU Usage %400 After Update 5.5 to 10.2 - mysql

Question

My database normal usage is average at 50% but after update MariaDB 5.5 to 10.2, It's getting high usage of 400%. I can't understand how to figure it out.
My server :
Intel(R) Xeon(R) CPU E3-1231 v3
32 GB DDR3 Ram
List item
Centos 7 Vestacp
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1370 mysql 20 0 4976292 1.3g 13432 S 412.5 4.1 148:20.00 mysqld
/etc/my.cnf :
[client]
#password = your_password
port = 3306
socket = /var/lib/mysql/mysql.sock
[mysqld]
port = 3306
socket = /var/lib/mysql/mysql.sock
skip-external-locking
key_buffer_size = 16M
max_allowed_packet = 1M
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
log-bin=mysql-bin
binlog_format=mixed
server-id = 1
#master-host = <hostname>
#master-user = <username>
#master-password = <password>
# optional - defaults to 3306
#master-port = <port>
#log-bin=mysql-bin
#innodb_data_home_dir = /var/lib/mysql
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /var/lib/mysql
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
#innodb_buffer_pool_size = 16M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 5M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
#safe-updates
[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
How Can I do this problem?
Thanks