Thanks Rikk
Apreciate you looking into this for me 🙂 

Update so far

I have been in touch with Adobe, have installed previous versions etc to test.

Have tried exporting to HDD rather than to my M.2 Scrtach disk.

Have unistalled nearly every other program.

Drivers for motherboard, video card up to date.

Firmware for motherboard, videocard etc all up to date.

At the moment I am having sucsess by turning off my VPN in Norton. Norton has a lot of background activity cheching files and monitoring so I had my suspisions there might be a confilict.
Its too early to be sure, more testing needs to be done, but turning off VPN seems to be helping. Not had a crash for 24 hours. 

I've looked at your crash reports. There are actually quite a few distinct failures but not many of any particular failure. That is very odd. 

It would be prudent, on both systems, to perform a clean reinstall of Lightroom Classic.  If after doing this on both systems you are still crashing, let me know. Please keep submitting the reports! Thanks.

Clean Lightroom Install Procedure

1. Close Lightroom
2. Restart the computer
3. Use the Adobe Creative Cloud App to uninstall Lightroom
4. Restart the computer
5. Install Lightroom via the Creative Cloud App without launching any other programs.
6. Restart the computer
7. Launch Lightroom
8. Wait 5 minutes

Call/contact Adobe

Thanks for your reply regarding GPU. so on the other machine I have studio drivers, and this on Game drivers. It was the first thing I tested. This did not fix issue. I know the i9 12900k has onboard graphics, so maybe a conflict. Looking at the crash report, one line of code suggests a memory confilict violation. I have no idea how to resolve that?

<crash exception="EXCEPTION_ACCESS_VIOLATION" exceptionCode="0xc0000005" 

Give Adobe a chat/call. That crash report may be key. Something makes me think graphics issue, but I cannot prove.

These computers, just one GPU? Not say two different ones (excluding integrated video control)

One thing to try, that GPU driver, I think it is the Game Ready driver, as opposed to the Studio driver. At NVIDIA I notice that the Studio driver is v511.09. Studio drivers are supposed to be more tested, and generally can be a version back. NVIDIA has gamers in mind for the Game Ready, higher end graphics artists for the Studio. You might want to try out changing to the Studio driver. When/if you do, select custom install type as to force a clean install.

Here is a part copy of my lightroom crash report

?xml version="1.0"?>

<!DOCTYPE AdobeCrashReport SYSTEM "AdobeCrashReporter.dtd">

<crashreport serviceVersion="4.7.0" clientVersion="4.7.0" applicationName="Adobe Lightroom Classic" applicationVersion="11.1" build="[202112022200-7fd1f998]" source="Windows-Client" crashType="n/a">

<time year="2022" month="1" day="24" hour="19" minute="11" second="41" timeoffset="0" timezone="GMT Standard Time"/>

<user guid="797bb787-110e-4012-8319-d0008cdda7a5"/>

<system platform="Windows 10 Pro" osversion="10.0" osbuild="22000" applicationlanguage="en-us" userlanguage="en-GB" oslanguage="en-GB" ram="32476" machine="12th Gen Intel(R) Core(TM) i9-12900K" model="Intel64 Family 6 Model 151 Stepping 2" cpuCount="24" cpuType="8664" cpuFreq="3187 MHz" processorArchitecture="9"/>

<gpu>

<gpuinfo availability="Running/Full Power" adapterCompatibility="NVIDIA" adapterRAM="4095 MB" caption="NVIDIA GeForce RTX 2080" description="NVIDIA GeForce RTX 2080" driverDate="20220110000000.000000-000" driverVersion="30.0.15.1123" videoModeDescription="3840 x 2160 x 4294967296 colors" pnpDeviceID="PCI&#92;VEN_10DE&#38;DEV_1E87&#38;SUBSYS_379F1458&#38;REV_A1&#92;4&#38;22F77229&#38;0&#38;0008" installedDisplayDrivers="nvldumdx.dll"/>

</gpu>

<crash exception="EXCEPTION_ACCESS_VIOLATION" exceptionCode="0xc0000005" instruction="0x00000000204577A6">

<backtrace crashedThread="0">

<thread index="0">

<stackStatement index="0" address="0x00000000204577A6" symbolname="unknown"/>

<stackStatement index="1" address="0x0000000020DC3D9D"

So I have tried exporting to a M.2 drive and standard harddrive both have the same problem.
Anotherthing I have noticed today is when I import my  photos for culling in Bridge, that also crashes when building previews. 

I have two systems both the same, and crashes both in Adobe products. Just to clarify the PC does not crash, just adobe products. I wonder if it has anything to do with the performencs cores and the efficiency cores of the 12th gen intel processors or the new DDR5 ram, both which have only been on the market for 2 months? 

So your sys is indeed up to date, OS version and GPU drive version,  nothing odd in SYS Info, including no plugins that are suspect. (Logitech Options would be one). CPU. RAM more than sufficient.

Where are you exporting to? What drive? Have you checked it for errors?

Hello, thanks for your reply

Lightroom Classic version: 11.1 [ 202112022200-7fd1f998 ]
License: Creative Cloud
Language setting: en
Operating system: Windows 10 - Business Edition
Version: 10.0.22000
Application architecture: x64
System architecture: x64
Logical processor count: 24
Processor speed: 3.1GHz
SqLite Version: 3.36.0
Built-in memory: 32476.2 MB
Real memory available to Lightroom: 32476.2 MB
Real memory used by Lightroom: 2594.8 MB (7.9%)
Virtual memory used by Lightroom: 7103.3 MB
GDI objects count: 707
USER objects count: 2155
Process handles count: 2487
Memory cache size: 59.1MB
Internal Camera Raw version: 14.1 [ 993 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 852MB / 16238MB (5%)
Camera Raw real memory: 1009MB / 32476MB (3%)
System DPI setting: 144 DPI (high DPI mode)
Desktop composition enabled: Yes
Displays: 1) 3840x2160, 2) 3840x2160
Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No

Graphics Processor Info:
DirectX: NVIDIA GeForce RTX 2080 (30.0.15.1123)

Application folder: C:\Program Files\Adobe\Adobe Lightroom Classic
Library Path: C:\Users\james\Pictures\Lightroom\Lightroom Catalog.lrcat
Settings Folder: C:\Users\james\AppData\Roaming\Adobe\Lightroom

Installed Plugins:
1) AdobeStock
2) Facebook
3) Flickr
4) Nikon Tether Plugin