MYSQL 5.7 Note Got an error reading communication packets - mysql

Question

134359 [Note] Got an error reading communication packets
Appears in logs every 5 minutes, I have seen a few similar posts on here however none actually match the error I'm seeing here.
MySQL 5.7 - configuration:
[mysqld]
##skip-name-resolve=1
#bind-address=localhost
default-storage-engine=InnoDB
innodb_file_per_table=1
performance-schema=1
server-id=2
auto_increment_offset = 2
auto_increment_increment= 5
report-host=2
log-slave-updates
##
replicate-ignore-db=mysql
replicate-ignore-db=cphulkd
replicate-ignore-db=information_schema
replicate-ignore-db=performance_schema
replicate-ignore-db=sys
##
max_connections=1000
table_open_cache=2000
wait_timeout=86400
interactive_timeout=86400
net_read_timeout=28800
net_write_timeout=28800
table_definition_cache=2000
thread_cache_size=100
long_query_time=10000
log_queries_not_using_indexes=0
innodb_page_cleaners=128
sql_mode=""
max_allowed_packet=512M
local-infile=0
[mysql]
# CLIENT #
port = 3306
socket = /var/lib/mysql/mysql.sock
[mysqld]
# GENERAL #
user = mysql
default-storage-engine = InnoDB
socket = /var/lib/mysql/mysql.sock
pid-file = /var/lib/mysql/mysql.pid
# MyISAM #
key-buffer-size = 10M
##myisam-recover = FORCE,BACKUP
# SAFETY #
max-allowed-packet = 10000M
max-connect-errors = 1000000
# DATA STORAGE #
datadir = /var/lib/mysql/
# BINARY LOGGING #
log-bin = /var/lib/mysql/mysql-bin
expire-logs-days = 14
sync-binlog = 0
# CACHES AND LIMITS #
tmp-table-size = 100M
max-heap-table-size = 100M
query-cache-type = 0
query-cache-size = 0
#max-connections = 1000
thread-cache-size = 50
open-files-limit = 1024
table-definition-cache = 4096
table_open_cache = 2024
# INNODB #
innodb-flush-method = O_DIRECT
innodb-log-files-in-group = 2
innodb-log-file-size = 10G
innodb_log_buffer_size = 5G
innodb-flush-log-at-trx-commit = 1
innodb-file-per-table = 1
innodb-buffer-pool-size = 80G
innodb_buffer_pool_instances = 64
innodb_write_io_threads = 64
innodb_read_io_threads = 64
innodb_max_dirty_pages_pct = 90
innodb_io_capacity = 1000
innodb_stats_on_metadata = 0
innodb_adaptive_flushing = 1
innodb_lru_scan_depth = 1024
# LOGGING #
log-error = /var/lib/mysql/mysql-error.log
log-queries-not-using-indexes = 0
slow-query-log = 0
slow-query-log-file = /var/lib/mysql/mysql-slow.log
join_buffer_size = 55M
binlog_cache_size = 16M
key_buffer_size = 50M
The thread ID 134359 doesn't correspond to any actual threads if I enable General MySQL Logging, nor does anything appear in a tcpdump during the events occuring.
At a loss? I do feel it's something CPanel or WHM related