Entry Processes 20/20 but CPU usage 0%

Try deactivating all plugins. If that resolves the issue, reactivate each one individually until you find the cause.

If that does not resolve the issue, try switching to the Twenty Fifteen theme to rule-out a theme-specific issue (theme functions can interfere like plugins).

Hey, so yeah i did the above mentioned, turned out the site was getting a lot of comments, in thousands which evidently were bot generated. That could be a reason right?

I recently re-installed wordpress, added plugins in WP- Security, Disqus, Akisment to protect the site. The site was working good for sometime but now it went down again. Here is my .htaccess file, have a look.

RewriteEngine on
# BEGIN All In One WP Security
#AIOWPS_BLOCK_WP_FILE_ACCESS_START
<Files license.txt>
order allow,deny
deny from all
</files>
<Files wp-config-sample.php>
order allow,deny
deny from all
</Files>
<Files readme.html>
order allow,deny
deny from all
</Files>
#AIOWPS_BLOCK_WP_FILE_ACCESS_END
#AIOWPS_BASIC_HTACCESS_RULES_START
<Files .htaccess>
order allow,deny
deny from all
</Files>
ServerSignature Off
LimitRequestBody 10240000
<Files wp-config.php>
order allow,deny
deny from all
</Files>
#AIOWPS_BASIC_HTACCESS_RULES_END
#AIOWPS_PINGBACK_HTACCESS_RULES_START
<Files xmlrpc.php>
order deny,allow
deny from all
</Files>
#AIOWPS_PINGBACK_HTACCESS_RULES_END
#AIOWPS_DISABLE_TRACE_TRACK_START
RewriteCond %{REQUEST_METHOD} ^(TRACE|TRACK)
RewriteRule .* - [F]
#AIOWPS_DISABLE_TRACE_TRACK_END
#AIOWPS_FORBID_PROXY_COMMENTS_START
RewriteCond %{REQUEST_METHOD} =POST
RewriteCond %{HTTP:VIA}%{HTTP:FORWARDED}%{HTTP:USERAGENT_VIA}%{HTTP:X_FORWARDED_FOR}%{HTTP:PROXY_CONNECTION} !^$ [OR]
RewriteCond %{HTTP:XPROXY_CONNECTION}%{HTTP:HTTP_PC_REMOTE_ADDR}%{HTTP:HTTP_CLIENT_IP} !^$
RewriteCond %{REQUEST_URI} !^/(wp-login.php|wp-admin/|wp-content/plugins/|wp-includes/).* [NC]
RewriteRule .* - [F,NS,L]
#AIOWPS_FORBID_PROXY_COMMENTS_END
#AIOWPS_ADVANCED_CHAR_STRING_FILTER_START
<IfModule mod_alias.c>
RedirectMatch 403 \,
RedirectMatch 403 \:
RedirectMatch 403 \;
RedirectMatch 403 \=
RedirectMatch 403 \@
RedirectMatch 403 \[
RedirectMatch 403 \]
RedirectMatch 403 \^
RedirectMatch 403 \

RedirectMatch 403 \{
RedirectMatch 403 \}
RedirectMatch 403 \~
RedirectMatch 403 \"
RedirectMatch 403 \$
RedirectMatch 403 \<
RedirectMatch 403 \>
RedirectMatch 403 \|
RedirectMatch 403 \.\.
RedirectMatch 403 \%0
RedirectMatch 403 \%A
RedirectMatch 403 \%B
RedirectMatch 403 \%C
RedirectMatch 403 \%D
RedirectMatch 403 \%E
RedirectMatch 403 \%F
RedirectMatch 403 \%22
RedirectMatch 403 \%27
RedirectMatch 403 \%28
RedirectMatch 403 \%29
RedirectMatch 403 \%3C
RedirectMatch 403 \%3E
RedirectMatch 403 \%3F
RedirectMatch 403 \%5B
RedirectMatch 403 \%5C
RedirectMatch 403 \%5D
RedirectMatch 403 \%7B
RedirectMatch 403 \%7C
RedirectMatch 403 \%7D
# COMMON PATTERNS
Redirectmatch 403 \_vpi
RedirectMatch 403 \.inc
Redirectmatch 403 xAou6
Redirectmatch 403 db\_name
Redirectmatch 403 select\(
Redirectmatch 403 convert\(
Redirectmatch 403 \/query\/
RedirectMatch 403 ImpEvData
Redirectmatch 403 \.XMLHTTP
Redirectmatch 403 proxydeny
RedirectMatch 403 function\.
Redirectmatch 403 remoteFile
Redirectmatch 403 servername
Redirectmatch 403 \&rptmode\=
Redirectmatch 403 sys\_cpanel
RedirectMatch 403 db\_connect
RedirectMatch 403 doeditconfig
RedirectMatch 403 check\_proxy
Redirectmatch 403 system\_user
Redirectmatch 403 \/\(null\)\/
Redirectmatch 403 clientrequest
Redirectmatch 403 option\_value
RedirectMatch 403 ref\.outcontrol
# SPECIFIC EXPLOITS
RedirectMatch 403 errors\.
RedirectMatch 403 config\.
RedirectMatch 403 include\.
RedirectMatch 403 display\.
RedirectMatch 403 register\.
Redirectmatch 403 password\.
RedirectMatch 403 maincore\.
RedirectMatch 403 authorize\.
Redirectmatch 403 macromates\.
RedirectMatch 403 head\_auth\.
RedirectMatch 403 submit\_links\.
RedirectMatch 403 change\_action\.
Redirectmatch 403 com\_facileforms\/
RedirectMatch 403 admin\_db\_utilities\.
RedirectMatch 403 admin\.webring\.docs\.
Redirectmatch 403 Table\/Latest\/index\.
</IfModule>
#AIOWPS_ADVANCED_CHAR_STRING_FILTER_END
#AIOWPS_FIVE_G_BLACKLIST_START
# 5G BLACKLIST/FIREWALL (2013)
# @ https://perishablepress.com/5g-blacklist-2013/
# 5G:[QUERY STRINGS]
<IfModule mod_rewrite.c>
RewriteBase /
RewriteCond %{QUERY_STRING} (\"|%22).*(<|>|%3) [NC,OR]
RewriteCond %{QUERY_STRING} (javascript:).*(\;) [NC,OR]
RewriteCond %{QUERY_STRING} (<|%3C).*script.*(>|%3) [NC,OR]
RewriteCond %{QUERY_STRING} (\\|\.\./|

|='$|=%27$) [NC,OR]
RewriteCond %{QUERY_STRING} (\;|'|\"|%22).*(union|select|insert|drop|update|md5|benchmark|or|and|if) [NC,OR]
RewriteCond %{QUERY_STRING} (base64_encode|localhost|mosconfig) [NC,OR]
RewriteCond %{QUERY_STRING} (boot\.ini|echo.*kae|etc/passwd) [NC,OR]
RewriteCond %{QUERY_STRING} (GLOBALS|REQUEST)(=|\[|%) [NC]
RewriteRule .* - [F]
</IfModule>
# 5G:[USER AGENTS]
<IfModule mod_setenvif.c>
# SetEnvIfNoCase User-Agent ^$ keep_out
SetEnvIfNoCase User-Agent (binlar|casper|cmsworldmap|comodo|diavol|dotbot|feedfinder|flicky|ia_archiver|jakarta|kmccrew|nutch|planetwork|purebot|pycurl|skygrid|sucker|turnit|vikspider|zmeu) keep_out
<limit GET POST PUT>
Order Allow,Deny
Allow from all
Deny from env=keep_out
</limit>
</IfModule>
# 5G:[REQUEST STRINGS]
<IfModule mod_alias.c>
RedirectMatch 403 (https?|ftp|php)\://
RedirectMatch 403 /(https?|ima|ucp)/
RedirectMatch 403 /(Permanent|Better)$
RedirectMatch 403 (\=\\\'|\=\\%27|/\\\'/?|\)\.css\()$
RedirectMatch 403 (\,|\)\+|/\,/|\{0\}|\(/\(|\.\.\.|\+\+\+|\||\\\"\\\")
RedirectMatch 403 \.(cgi|asp|aspx|cfg|dll|exe|jsp|mdb|sql|ini|rar)$
RedirectMatch 403 /(contac|fpw|install|pingserver|register)\.php$
RedirectMatch 403 (base64|crossdomain|localhost|wwwroot|e107\_)
RedirectMatch 403 (eval\(|\_vti\_|\(null\)|echo.*kae|config\.xml)
RedirectMatch 403 \.well\-known/host\-meta
RedirectMatch 403 /function\.array\-rand
RedirectMatch 403 \)\;\$\(this\)\.html\(
RedirectMatch 403 proc/self/environ
RedirectMatch 403 msnbot\.htm\)\.\_
RedirectMatch 403 /ref\.outcontrol
RedirectMatch 403 com\_cropimage
RedirectMatch 403 indonesia\.htm
RedirectMatch 403 \{\$itemURL\}
RedirectMatch 403 function\(\)
RedirectMatch 403 labels\.rdf
RedirectMatch 403 /playing.php
RedirectMatch 403 muieblackcat
</IfModule>
# 5G:[REQUEST METHOD]
<ifModule mod_rewrite.c>
RewriteCond %{REQUEST_METHOD} ^(TRACE|TRACK)
RewriteRule .* - [F]
</IfModule>
#AIOWPS_FIVE_G_BLACKLIST_END
#AIOWPS_PREVENT_IMAGE_HOTLINKS_START
<IfModule mod_rewrite.c>
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{REQUEST_FILENAME} -f
RewriteCond %{REQUEST_FILENAME} \.(gif|jpe?g?|png)$ [NC]
RewriteCond %{HTTP_REFERER} !^http(s)?://(.*)?\.deraileddouchebaggery\.com [NC]
RewriteRule \.(gif|jpe?g?|png)$ - [F,NC,L]
</IfModule>
#AIOWPS_PREVENT_IMAGE_HOTLINKS_END
# END All In One WP Security
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress
# mod_pagespeed configuration - Do NOT modify the contents
<IfModule pagespeed_module>
ModPagespeedDomain *
ModPagespeed on
</IfModule>
# End of mod_pagespeed configuration- Do NOT modify the contents
<Files 403.shtml>
order allow,deny
allow from all
</Files>
deny from 167.160.107.148
deny from 173.0.57.33
deny from 23.95.105.4
deny from 69.12.83.115
deny from 69.12.83.192
deny from 74.117.238.211
deny from 23.95.105.37
deny from 103.21.58.122
deny from 23.95.105.22
deny from 167.160.107.158
deny from 69.12.83.117
deny from 199.119.226.52
deny from 46.102.100.213
deny from 155.94.135.137
deny from 216.107.157.71
deny from 209.141.59.13
deny from 23.247.255.23
deny from 198.23.215.67
deny from 210.101.131.232
deny from 64.79.110.135
deny from 201.76.113.14
deny from 69.12.83.141
deny from 107.181.78.93
deny from 198.41.243.252
deny from 198.23.167.174
deny from 192.255.78.141
deny from 216.107.157.31
deny from 188.190.27.169
deny from 107.150.63.82
deny from 167.160.107.16
deny from 195.154.45.248
deny from 109.169.84.124
deny from 145.255.180.222
deny from 192.171.233.169
deny from 209.161.98.178
deny from 46.53.183.178
deny from 87.126.173.75
deny from 107.190.163.34
deny from 45.59.156.21
deny from 171.5.10.164
deny from 124.88.67.13
deny from 5.175.206.65
deny from 222.89.154.6
deny from 23.229.97.41
deny from 188.240.129.36
deny from 220.180.11.210
deny from 91.221.66.101
deny from 192.95.37.15
deny from 188.72.108.5

I denied couple of ip addresses from the c-panel, these addresses were the ones which were spam commenting on the website. There seems to be an issue?