Lightroom Classic 13.3 appears to hang with catalogue disk activity

I updated to Lightroom Classic 13.3 when it became available and notice an annoying problem.  First, I have a fairly large catelogue (3.635 GB) with well over 250,000 images.  When working on 13.3 everyonce in a while I'll notice it seems to be hung.  I check the task manager and the drive containing the catalogue is at 100% and stays there for about a minute then goes back to normal and is usable again.  This happened about every ten minutes when I was working on photos last night and was very annoying.  It also happened while importing once.

My system is a Dell XPS-8500 with an older i7 quad core hyperthreaded processor (8 processors), 32 GB of memory running Windows 10 (up to date on patches).  The photos are on external USB 3 drives and the catalog is on a 256 GB SSD drive on the motherboard (not the system drive).