Comanglia// These settings will boost your performance on a 4 core CPU
// loop through the leaf asynchronously
cl_threaded_client_leaf_system 1
Have you play tested with this enabled, it's been awhile since I've tried but in the past it caused crashes usually within a few minutes.
I found that the culprit for crashes was actually r_queued_decals 1 (at least in my case and one of my friend's), which should be turned off anyway with low decal counts.
Also, cl_threaded_client_leaf_system isn't actually used by default in the base Source 2013 engine, though I've left it in the config in the event that TF2's engine uses it (through extension of the base engine, or lack of an update for that system).
VulcanAny benchmarks against pre existing configs?
I haven't personally done any benchmarks, mostly because I use Linux and it won't be an accurate representation of performance since most configs don't have Linux specific CVars, and ToGL (which is what Valve uses to convert DirectX to OpenGL) messes up performance statistics.
I'd love if someone could make their own benchmarks at this point.