From Emanuel Muckenhuber:

Can you try to exclude the admin-console from annotation scanning and
see if that helps?

in deployers/metadata-deployer-jboss-beans.xml

<entry>
<key>admin-console.war</key>
<value><null/></value>
</entry>

For me (Brian), that knocks 5 secs off boot time. Seems to cover the same ground as EMBJOPR-277 though; i.e. if I do this, EMBJOPR-277 doesn't seem to provide additional gains.