Photoshop shutting off and disappearing in a flash

When I'm in nthe middle of work PS will just disappear! 

It shuts off.

Last week this was fine, it started happening yesterday.

I updated macOS and checked my PSCC was up to date. It still happens.

It literally just vanishes in the blink of an eye *gone*.

SEE VIDEO

macOS Catalina v10.15.4

iMac (Retina 5K, 27-inch, Mid 2015)

3.3 GHz Quad-Core Intel Core i5

8 GB 1600 MHz DDR3

Crash Report:

Process: Adobe Photoshop 2020 [880]
Path: /Applications/Adobe Photoshop 2020/Adobe Photoshop 2020.app/Contents/MacOS/Adobe Photoshop 2020
Identifier: Adobe Photoshop 2020
Version: 21.1.2 (21.1.2.136)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Adobe Photoshop 2020 [880]
User ID: 502

Date/Time: 2020-04-15 10:28:10.777 +0100
OS Version: Mac OS X 10.15.4 (19E287)
Report Version: 12
Anonymous UUID: 75AD5F54-CE28-B306-9F42-6B5B215D2021

Time Awake Since Boot: 6500 seconds

System Integrity Protection: enabled

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY

Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [880]

VM Regions Near 0: