Several threads call EnsureYieldProcessorNormalizedInitialized(), which computes how much time a yield does take. Of course, it softlocks because we don't advance time. This is an internal function, so we probably can't hook it. We need to detect somehow that we are inside a busy loop.

Source code can be found in https://github.com/dotnet/runtime/blob/master/src/coreclr/src/vm/yieldprocessornormalized.cpp