Wow, thank you for the detailed report. In response, I’m going to give you a long detailed series of things to try. There are many options here and so I suggest you read throught this and see if any applies better or worse for you. These all came from a compilation of suggestions to folks over the years. Usually, at least one of these do helps someone.
And, let me add, as I’m sure you know already, your Intel computer is about to not be helpful next year when OS 27 is released as it will not have Rosetta letting you use updated software. FWIW, I do not consider this an inside plan of software companies plotting to help the hardware companies and vise versa. Rather I consider this both software and hardware companies trying to keep things moving to provide the latest and greatest for their customers. There are two solutions: One is to keep using your current software until it can no longer support updated software, or two: Get a new computer.
So, here are some suggestions on your issue:
Under the rule of finger-pointing: if a lot of people are having a similar issue, the problem is probably in the software; if an extremely limited of people are having the problem, it's probably something with their system software and/or system. Right now, you are the only person to report this.
Let's see if we can try a variety of things to see if we can resolve this.
Easy try #1) Rebuild LRC's Preferences (here’s how to do that):
Now see if the problem continues to exist.
If it does, then try #2: COMPLETELY uninstall (including any Preferences) and then reinstall LRCs.
Now see if the problem continues to exist.
{1) Restart into Safe Mode. I'm going to let you Google how to do that, as there are many videos and text for that. Since you are using an Intel chip, the process might be different for you versus a different chip or OS. So be sure you are looking at the relevant options.
2), Also, look up how to start in "Repair mode." There are some basic maintenance things you can do in that; it’s worth trying those repair processes.]
A bit more work: try #3). There are two very good Mac System maintenance applications; one is free, and the other has a minimal charge. FWIW, I've been paying the "paid" one for years because it got me out of a big jam years ago.
The free: Onyx (http://www.onyxmac.com/)
The one with the charge (but free trial): (https://www.northernsoftworks.com/) [Note: as the Mac system continues to advance, each time there's a new system name, there's a new name for this product. Eash one will work on older systems, but this is now updated for the new systems. As updates to the system are released, you may have to occasionally update this app. There is no charge for these updates — only when there is a new Mac OS with a new name is there ever an update charge.
I've never done a back-to-back cross-check with these applications because once the problem is "fixed," it's not possible to see if the other one can fix it better/faster/slicker.
FWIW, any time my system is doing something "not right," I run one or the other of these applications.
There are two, maybe two, tabs I typically use: Maintenance, Cache Cleaning, and sometimes I also do Optimize.
Click on the Maintenance tab:
Note: depending on the size of your hard drive and the number of “stuff” you have on it, Repairing Permissions can take a LONG time. For me it takes hours, so do this at a time when you’ll intentionally be away from the computer for a while.
I check everything there is (clicking on “All” in the upper right corner does the same thing) and click Run. You may or may not have to restart depending on what it finds and what it does.
Then, if things are acting a bit “off” I might do the Cache Cleaning thing. This is what sold it for me.
I’ve done a Medium Cleaning and clicked all three options. There have been times I did a deep cleaning. I'd do the Medium before the Deep and see if that solves the problem. Depending on what it finds, it may or may not require a restart of the computer.
Lastly is the Optimize. I can’t say I’ve seen that much difference with this, but it doesn’t seem to hurt. Your mileage, as they say, may vary.
There is a manual if you want to get a more knowledgeable background on what to click on.
If this helps, please let me know.
I neither work for Adobe nor Northern Software. I do support both because they help me get my work done.