The problem with fosselize is that it’s currently bugged, and happens to precompile way more things than are needed, such as all workshop content that you might not have installed which takes a really long time + bloats up the shader cache in size. On anything that’s not low-end, it’s pretty much a waste of time since shader compilation is easily done on runtime.
Some issues on the things I’ve mentioned that Valve hasn’t seem to have responded yet: bloat, time
There goes the trust in US institutions for even more people.