Deacon3, if you are trying to do a note for note cover then you should use
RealBand, (RB), it comes free with Band-in-a-box (BiaB). Be prepared to do a lot of editing to get your exact covers. You may get a song or less a month this way.

If you are looking for some great backing tracks that are not an exact cover copy then use Biab. Just input your chords, pick a style and play then save the file. You should be able to get a song out per hour or less.

BiaB and RB are very in depth programs. However for generating backing tracks they are very intuitive for a musician to use. Like you I am a guitarist. I was playing along with BiaB about 20 minutes after installing the program! The longer I use it the more in-depth I get with the program. I still only use about 30% of what BiaB can do, but I use the parts that I need to use. I do not use lyrics and it sounds like you do not need to use that portion of the program either; I’ll let someone who uses lyrics tell you how hard or easy it is to use.

It is a the perfect program for what you need to do.

PS – I do covers also. I do not do exact copy covers and most people don’t even care!

I think my wife has started to show the first signs of dementia.
She said she can't remember what she ever saw in me!

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