Splunk Stream Memory

I have noticed a big spike in Memory with Splunk Stream on one of our SQL Servers. It climbed up to 30GB and caused some performance degradation. this is a 7.3.1 universal forwarded, but splunk stream may be incompatible with 7.3.x Can anyone confirm that Splunk Stream works on 7.3.x and that memory should not be a problem.I found one post here from Splunk version 6.6 reporting the same phenomenon. Thanks.