High cpu usage after php7 ea4 install

I have used easy apache 4 to install php7/7.1/7.2 as i previously only had php5 and doing some testing before giving to clients. Im testing by using wordpress and setting the site to php 7 from multi php manager. Since doing so im getting emails about high cpu load and have been finding several processes run under the name of nobody with this /usr/sbin/httpd -k start They seem to hang the system and sometimes running 24hrs+ and using 100% cpu. I never had any issue with other sites on php 5? what can i do to fix this?