Hey guys,
im new to UE5 (tough not completely new to world of 3D), been working on my second scene following a course when suddenly I started to get this weird flicker.
While trying to figure out what happened it turned out this happens now in every project, be it the older scene that was fine or completely new one - I just create new project using the basic film template (no RT), add a megascan asset in nanite quality and there it is (left formation with is with nanite and right without):
Theres something weird going on in the nanite formation - i would describe it as AA + shadow flicekring (it might not be overly visible on gdrive preview so please download the file). I also noticed the shadow “flicker” appears on the non nanite mesh as well but in very limited capacity.
It seems to me theres something weird going on but im by no means expert or well educated on the topic. So far I tried:
messing with AA settings (various modes, turn off)
different types of lighting
various project settings like turning lumen off for shadows / reflections etc
reinstalling UE
trying older version of UE
reinstalling drivers (and trying to switch between game and studio drivers)
When I tried on my secondary PC it seemed to all work fine so the nly thing for me to try is swapping the gpu to excplude hardware failiru (even tough everything else works fine on my secondary pc).
Ok so after more investigation I am thinnking about just ditching ue. This issue isnt solvable. I did everything inluding swapping hardware and complete OS reinstall - nothing. Stupid flickerikng is there to stay. I have never seen any piece of software behave in such manner. How can anyon use this successfully is beyond me.
ok, so from your videos is hard to tell what could be the issue. but always make a build and see if in game works standalone.
first try with an default new project. see if there is any issue.
the flicker could happen because either the nanite settings are not set correctly. when not moving the camera, look into the nanite visualization window, did the triangles appear and disappear? Like they get rebuilt constantly? That should happen when approaching or moving away from an object not all the time.
If the trangles stay still then it could be an issue with the lighting, where it tries to auto balance the exposure and always.
Also try posting in the forum dedicated to nanite because this section is more for an overall project setup
Hey,
thanks for reply. Ive been digging around more and the issue isnt in nanite itself exactly apparently. I get the flicker all the way down into basic lighting. I can see the flickers even when I:
set up completely new project without raytracing
add non nanite med quality megascan of some rocks or something
turn off lumen GI, reflections and nanite
turn off AA
When using light only view I can see the shadows being noisy and flickery:
which in turn seems to make nanite constantly redraw as you mentioned. When I do exactly same thing on my secondary PC I dont see any base light / sadow flickering and nanites arent constantly redrawn which is as you say how it should be. On my main PC the only view I dont get the flickering in is unlit.
Also Its there in editor, its there when I try run it as a game and its there when I render it with movie queue.
So I really dont know whats going on. I tried using gpu from my secondary pc in main and reinstalling OS but its still there. It wasn there two days ago, it just started when I was wokring on a project and is there ever since.
Hi, did you find a solution? I have the exact same issue. I’ve changed so many options and variables but nothing helps. I simply ignore it for now and hopes 5.4 will fix it.