When JavaFX is built with -PCONF=Release and RenderPerfTest is run with following flags:
-Dprism.verbose=true -Dprism.debug=true -Djavafx.animation.fullspeed=true -Dprism.d3d12.debugLayers=true -Dprism.order=d3d12 renderperf.RenderPerfTest -t WhiteText -n 10000

Backend will frequently skip rendering some Text nodes and print multiple error messages per frame like below:
[D3D12-ERROR] <Internal\D3D12RingContainer.cpp:140> Ring Container 'Main Ring Buffer' fully allocated, cannot allocate 524288 bytes (h: 65536 t: 33095680 used: 33030144 size 33554432)
[D3D12-ERROR] <D3D12NativeDevice.cpp:503> Ring Buffer allocation failed