Hi,

We have noticed that while the UE4 edtior hangs(for example opening a large level), all added stat messages from other threads will keep accumulating and allocate a huge amount of memory.
In our case, the large proportion of stat messages were coming from FPlatformProcess::Sleepfunction called in FHoudiniEngineScheduler::ProcessQueuedTasks.

Is it safe to replace the call to FPlatformProcess::Sleepwith FPlatformProcess::SleepNoStatsor can you recommend a good approach to solve the problem?

Hi. I just created an issue [github.com] on Github related to your message.
One CPU core is loaded on 100% with Houdini Engine enabled because of

I hope our issues will be fixed

Thanks for bringing that up.
I had fixed the sleep issue in v2 already, but will be backporting that to v1 today.