Please, fix the config in "standalone.conf.bat" file of Wildfly for Windows (jbpm-server-7.10.0.Final-dist.zip) and change java MAX heap size/MaxMetaspaceSize to at least 2G by default. For example, like this:

rem # JVM memory allocation pool parameters - modify as appropriate.
set "JAVA_OPTS=-Xms64M -Xmx2G -XX:MetaspaceSize=96M -XX:MaxMetaspaceSize=2G"

With the -Xmx512M Wildfly can start, but jBPM - not (OutOfMemoryError).