Google/Bing free octave vst and you will find a number of them that will take a guitar down at least an octave. Note that I have no experience with any of these.

Another option is to record the guitar simulating a bass part then drop that part an octave.


Dad, how will I know when I've become an adult.

When your day is ruined because they rearranged the grocery store.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware