Roon crashes or very slow to respond on Windows laptop

Roon Core Machine

Intel Core i7-6700 @3.4GHz. 16GB Ram. Windows 10 64 bit, Multiple SSD’s
Music collection is stored locally on this PC.

Networking Gear & Setup Details

Telstra Router
All computers and audio devices are connected via TCP/IP
I have a Clipsal StarServe hub with an ethernet switch to distribute ethernet throughout the house.

Connected Audio Devices

Naim NDX. I run the uPnP Bridge to connect Roon to Naim

Number of Tracks in Library

8800 tracks

Description of Issue

Roon Core is running on a PC. This works fine.
My Apple iPhone connects and works fine.
I have a work laptop HP Z-Book G6 i9, 64G ram. This is the computer with the issue.
After initially queuing a CD to play, during which I am using my laptop for work, I switch back to Roon. Roon hangs, often crashes several moments later, or sometimes eventually responds (normally if I do not click any buttons within the app).
This has been happening for at least 6 months I would say. It had worked fine in the past.

I have added Roon to my firewall rules. I have Dotnet 4.8 installed, although it won’t let me reinstall because it says it is already there.
I have generated a log and can send this.
I see the error in the log
Faulting application name: Roon.exe, version: 1.0.0.0, time stamp: 0x6359e34c
Faulting module name: clr.dll, version: 4.8.9105.0, time stamp: 0x632272c6
Exception code: 0xc00000fd
Fault offset: 0x000000000018a594
Faulting process id: 0x0x3B10
Faulting application start time: 0x0x1D8F24F21253EEF
Faulting application path: C:\Users\dthomas\AppData\Local\Roon\Application\Roon.exe
Faulting module path: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll
Report Id: 4a7b8cab-e568-495d-95bf-da64fa6d0824
Faulting package full name:
Faulting package-relative application ID:

Nothing really new, some users reported to be able to resolve similar issues: Search results for 'clr.dll order:latest' - Roon Labs Community

Others were not so lucky and ended up in:

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A post was merged into an existing topic: Roon keeps freezing and crashing on Windows (mostly when resuming from minimized) [Partially Solved]