Quake Engine Perception Issues... When Will this Get Fixed?

What about all the starbreeze games? And mirror’s edge?
They’re First person arms interacted with the surroundings and it worked perfectly.

eh?
https://www.moddb.com/mods/gow-fps-terminator

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.