Roughly 2 weeks ago (min-May), out of nowhere, I started to have similar UE (5.5.4) crashes when a certain DT was opened (or its existing tab was switched to if already opened). Coincidentally this started after the recent Windows 11 update (not saying it is or is not related).
I have an Nvidia GPU, not AMD. It had the previous version of the studio driver, but after the first week of this issue, I upgraded to the latest studio driver and rebooted. I also deleted all temporary folders in the project. But the problem returns sometimes, but not every time.
The crash can occur with no other assets open, simply opening that one DT would initiate a crash. Opening other DTs dirst did not have this problem, but then opening that one crashed. Keeping windows at full screen did not prevent crashes in my case.
The specific (and consistent) error from the crash log:
LogWindows: Error: appError called: Assertion failed: TryAllocateInternal(InSize, AllocationAlignment, AllocationResourceType, AllocationData) [File:D:\build\++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12PoolAllocator.cpp] [Line: 375]
At this point I do not have a confirmed work-around (I do not wish to change to DX11), but wanted to provide additional information on the issue.