I have been facing this issue very randomly throughout the editor.
5.3 and 5.2 I have tested so far. It would randomly throw a GPU timeout and the computer will freeze. Have also left the computer unattended overnight to see if it resolves on its own. No use. Increased TDRDelay no use. Disabled MPO no use as well.
The 100% way of recreating this on my PC seems to be creating a landscape in LIT mode. It would just crash as soon as I open the landscape dialog in LIT mode. but doing the same in Unlit mode works fine. Actually, no crashes at all if I keep the renderer on unlit throughout.
A few of the very random logs.
[2023.09.12-12.03.06:152][430]LogD3D12RHI: Warning: GPU timeout: A payload (0x00000A8A9B045200) on the [0x00000A8A859E8300, 3D] queue has not completed after 5.000000 seconds.
[2023.09.14-11.43.57:196][302]LogFileHelpers: Saving map 'test1' took 0.648
[2023.09.14-11.43.57:201][302]LogFileHelpers: InternalPromptForCheckoutAndSave took 5.77 sec
[2023.09.14-11.43.57:203][302]AssetCheck: New page: Asset Save: test1
[2023.09.14-11.43.57:203][302]LogContentValidation: Display: Validating /Script/Engine.World /Game/maps_production/test1.test1
[2023.09.14-11.44.02:613][310]LogD3D12RHI: Warning: GPU timeout: A payload (0x00000666C084BB00) on the [0x00000666AB218300, 3D] queue has not completed after 5.000000 seconds.
[2023.09.14-08.18.10:190][874]LogEditorViewport: Clicking Background
[2023.09.14-08.18.37:197][372]LogD3D12RHI: Warning: GPU timeout: A payload (0x00000AF6B5B67600) on the [0x00000AF697A28300, 3D] queue has not completed after 5.000000 seconds.
[2023.09.14-10.51.42:049][424]LogAutomationController: Ignoring very large delta of 3.36 seconds in calls to FAutomationControllerManager::Tick() and not penalizing unresponsive tests
[2023.09.14-10.51.53:139][ 8]LogViewport: Scene viewport resized to 1150x885, mode Windowed.
[2023.09.14-10.52.04:380][369]LogD3D12RHI: Warning: GPU timeout: A payload (0x00000A9C17046F00) on the [0x00000A9BF9218300, 3D] queue has not completed after 5.000000 seconds.
I have tried all the nvidia drivers since August 2022. Same issue on all of them.
GPU is Titan X Maxwell architecture.
LogCsvProfiler: Display: Metadata set : platform="Windows"
LogCsvProfiler: Display: Metadata set : config="Development"
LogCsvProfiler: Display: Metadata set : buildversion="++UE5+Release-5.3-CL-27405482"
LogCsvProfiler: Display: Metadata set : engineversion="5.3.0-27405482+++UE5+Release-5.3"
LogCsvProfiler: Display: Metadata set : os="Windows 10 (22H2) [10.0.19045.3324] "
LogCsvProfiler: Display: Metadata set : cpu="GenuineIntel|Intel(R) Core(TM) i7-6850K CPU @ 3.60GHz"
LogCsvProfiler: Display: Metadata set : pgoenabled="0"
LogCsvProfiler: Display: Metadata set : pgoprofilingenabled="0"
LogCsvProfiler: Display: Metadata set : ltoenabled="0"
LogCsvProfiler: Display: Metadata set : asan="0"
LogCsvProfiler: Display: Metadata set : commandline="" E:\UnrealProjects_SSD\xxxxxx\xxxxx.uproject""
LogCsvProfiler: Display: Metadata set : loginid="86368e0d49251076e23d31aa94987927"
LogCsvProfiler: Display: Metadata set : llm="0"
I will try out 5.0 and 5.1.1 since they are the last engines where I didn’t have issues with the landscape editor.