So far everyone who is seeing this issue is on 10.14: Gijs, groovecoder, Tony, Standard8 mconley who was seeing the OOM issues doesn't have the issue on 10.15.
Bug 1632488 Comment 6 Edit History
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So far everyone who is seeing this issue is on 10.14: Gijs, groovecoder, Tony, Standard8 mconley who was seeing the OOM issues doesn't have this issue on 10.15.