I looked into all of this, and still have a use case where it doesn't quite work out as well as it could with Java.
I can almost make it work with some pretty aggressive hackarounds, such as subdividing my service into multiple, smaller processes that each operate w/ workstation GC mode. GC runs pretty fast when object count is reasonable. Something like 1 process per latency-sensitive client is where I am at with .NET right now.
