Forge auto-deploy deployments failing with default deploy script

I am running a DO server with PHP 7.1, and have an issue that occurs (fairly often) where an auto-deployment will fail and actually kill the php service - requiring me to logon and reboot the server.

The deployments seem to work fine, but I get the email saying it failed - the bottom line of the error is "php7.1-fpm.service is not active, cannot reload."

I am thinking this is due to me using multiple instances of the same project - which all deploy at the same time - and for some reason the php service fails to reload properly. Maybe this is due to using opcache?

Does anyone else have this issue? or could suggest a workaround? any help is appreciated.