incredibly choppy

My computer more than meets the sys. req. however im finding even putting options on low and low resolution every few seconds the game just freezes for like .5 sec…makes it pretty unplayable for me atm, anyone aware of what might be causing this?

Try this:
https://developer.valvesoftware.com/wiki/Showbudget
It might give you some insights on what’s slow.

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.