Old Ed,
I just saw your post. I only read a few on this thread and your post caught my eye because of your user name.
I hear you. I'm a computer hobbyist and I keep track of all the latest chip releases -- CPUs and GPUs - from all the big players and I follow how much parts cost because I build my own rigs.
I also track closely the development and release of all the 13 and 15-inch traditional clamshell laptops, hybrids, two-in-ones and tablets.
The point is this. The abundance of processing power at a cheap price is absolutely the highest it has ever been by huge leaps and bounds over what it was three years ago. What is ailing you will not be an issue if you spend just a little bit of money.
Ed, it is time for you to upgrade your PC and if you use a laptop, then it is really time to upgrade that baby.
You really do also need to invest 10 bucks a month and pay for the latest Lightroom and Photoshop that is constantly updated and improved. It is the way the industry is now. No need to fight it.
You will be amazed with your new PC and/or laptop. The RAF files will absolutely zip at lightening speed and you will not notice even a hint of lag. That old issue has been put to bed forever by the incredible power of these new CPUs, GPUs, fast RAM and uber-fast PCIe M.2 SSDs. Everything snaps instantly.
You don't have to spend a lot. In fact, I do my road work on a 13 inch Dell XPS 4K laptop that has a nice little M.2 SSD. It blasts through Lightroom at warp speed. You can load and develop RAFs so fast it will amaze you even on that little 2.5 pound clamshell. It has more power than my gaming rig had 4 years ago.
Get a new PC Ed. Any new mid-range PC with an 8th generation Intel chip, mid-range GPU and a nice M.2 SSD will scream through those RAF files so fast you won't even be able to blink.
It is time Ed. You need a new PC (spend maybe 800 bucks to a grand). You need a new laptop (same price). Now you can spend double or triple that - but no need to in order to zip through RAF files in Lightroom.
Just do it. You will enjoy your photography, and your life with your new PC and laptop, much more.
Greg Johnson, San Antonio, Texas
https://www.flickr.com/photos/139148982@N02/albums