Stuttering during window resize on D3D11 Rhi

Any example project reproduces this issue, e.g. shadereffects. When the window is made smaller, the contents jump back to a slightly bigger size as you uniformly shrink the window.

Using Nvidia Titan RTX and driver release 469.49. Prior driver release was exhibiting full-screen flickering while shrinking the window, so with the latest release, at least we don't have that, but the qml content resizing is quite jerky.

qt.scenegraph.general: Using QRhi with backend D3D11
Graphics API debug/validation layers: 0
QRhi profiling and debug markers: 0
Shader/pipeline cache collection: 0
qt.scenegraph.general: threaded render loop
qt.scenegraph.general: Using sg animation driver
qt.scenegraph.general: Animation Driver: using vsync: 8.33 ms
NVD3DREL: GR-805 : DX9 Overlay is DISABLED
qt.scenegraph.general: Using sg animation driver
qt.scenegraph.general: Animation Driver: using vsync: 8.33 ms
qt.rhi.general: DXGI 1.2 = true, FLIP_DISCARD swapchain supported = true
qt.rhi.general: Adapter 0: 'NVIDIA TITAN RTX' (vendor 0x10DE device 0x1E02 flags 0x0)
qt.rhi.general: using this adapter
qt.rhi.general: Adapter 1: 'Microsoft Basic Render Driver' (vendor 0x1414 device 0x8C flags 0x2)
qt.scenegraph.general: MSAA sample count for the swapchain is 1. Alpha channel requested = no.
qt.scenegraph.general: rhi texture atlas dimensions: 512x512

While dragging the window, the console output looks like this, with the animation driver being constantly toggled between modes:
qt.scenegraph.general: Using sg animation driver
qt.scenegraph.general: animation driver switched to vsync mode
qt.scenegraph.general: animation driver switched to timer mode
qt.scenegraph.general: Using sg animation driver
qt.scenegraph.general: animation driver switched to vsync mode
qt.scenegraph.general: animation driver switched to timer mode
qt.scenegraph.general: Using sg animation driver
qt.scenegraph.general: animation driver switched to vsync mode
qt.scenegraph.general: animation driver switched to timer mode
qt.scenegraph.general: Using sg animation driver
qt.scenegraph.general: animation driver switched to vsync mode
qt.scenegraph.general: animation driver switched to timer mode
qt.scenegraph.general: Using sg animation driver
qt.scenegraph.general: animation driver switched to vsync mode
qt.scenegraph.general: animation driver switched to timer mode
qt.scenegraph.general: Using sg animation driver
qt.scenegraph.general: animation driver switched to vsync mode