Strange performance when adjusting r.ScreenPercentage

UE - Graphics Features - Apr 6, 2021

A UDN user has reported strange performance characteristics with occlusion queries / lights when using screen percentage. It appears using a higher screen percentage is faster; the user attached a s ...

SweepComponent fails against non-root bodies of skeletal mesh component in PhysX

UE - Simulation - Physics - Apr 6, 2021

UDN - https://udn.unrealengine.com/s/question/0D52L00005H9X5XSAV/sweepcomponent-never-returns-a-valid-hit-against-skeletal-meshes-when-using-physx?fromCase=1 ...

Incorrect AO rendering when that using SSGI.HalfRes

UE - Graphics Features - Apr 6, 2021

This problem seems to have started from 4.26. Also, setting r.DiffuseIndirect.Denoiser=0 will increase the noise but invisible the rendering in problem. ...

Deprecated Event Dispatchers on components do not warn on their attached actors

UE - Gameplay - Blueprint Editor - Apr 5, 2021

[Link Removed] ...

Replace with child on subtree of the NamedSlot is broken after reloading a widget.

UE - Editor - UI Systems - Apr 5, 2021

"Replace with child" does not work well with the NamedSlot widget after reloading the widget blueprint in Contents Browser. ...

An array of structures variable has its values reset when the structure is modified without recompiling the blueprint

UE - Gameplay - Apr 2, 2021

An array of a structure that has been modified without the array's blueprint being complied results in the values of the array element being reset. Compiling each blueprint that has the array of str ...

Non instanced subobject gets set to none after compiling editor

UE - Gameplay - Components - Apr 2, 2021

Non Instanced Subobject sets to none after compiling the blueprint. Please see attached video for more details. Checking regression in 4.26 now ...

[Feature Request] Single Layer Water shader doesn't accept Realtime Raytracing Shadows

UE - Graphics Features - Lumen - Apr 1, 2021

This might be feature request? ...

Ensure condition failed : loading sublevels containing reflection captures, UpdateAllReflectionCaptures may be called twice

UE - Graphics Features - Apr 1, 2021

If sublevels containing multiple reflection captures are loaded in consecutive ticks and the execution timing of UpdateMaxCubemaps on rendering thread is delayed, UpdateAllReflectionCaptures will be ...