why does my photo app keep crashing?

[RicardoVerdi_515]

I have many scanned photos; sometimes I scan 3 or 4 together, as 4 of my standard size photos just fit one A4 page. Then I use the Microsoft Photos app to edit them so I can save them all as individual photos, and have the correct orientation. But although my Photos app used to work perfectly, now it keeps going wrong. When I hit Save a copy (or Ctrl +S) the save menu often flashes on and off the screen, then the app just closes. Usually when I try it again it works fine the 2nd time. It often works properly the next time, but then subsequently goes wrong again. Usually it seems to work properly with every 2nd attempt. As you can imagine this is very frustrating and time-consuming . Can anyone suggest a simple fix please?
The photos are just family snaps.
I doubt if any of these details are relevant, but just in case...
I'm scanning jpg at 300 dpi on Samsung SCX-3200
using Microsoft Photos 2020.20090.1002.0
Windows Version 10.0.19041 Build 19041
System Name DESKTOP-T7JGE6N
System Manufacturer ASUSTeK COMPUTER INC.
System Model A_F_K31ADE
System Type x64-based PC
System SKU All
Processor Intel(R) Core(TM) i3-4170 CPU @ 3.70GHz, 3700 Mhz, 2 Core(s), 4 Logical Processor(s)
BIOS Version/Date American Megatrends Inc. 0401, 14/07/2015
SMBIOS Version 2.7
Embedded Controller Version 255.255
BIOS Mode UEFI
BaseBoard Manufacturer ASUSTeK COMPUTER INC.

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