Why my render borders are darker?

Hello,

Each time I try to render high resolutions, like here 11500x2160 or 15k, I have a glitch where border are darker (like in the right of the image in red), or buggy and kinda reflect what is around the scene? (left in blue).

But this glitches does not always appear, I think it’s when object are close, but not sure yet…

Do someone know what is happening here ?
For information, when I lower the res, everything works as intended.

Another screenshots, on the right darker area, and left we can see like ghostly reflections of other assets on the scene.

Can’t understand what happening here… but seems that the camera focal length also have an impact on how much the glitch occure.

Still no solutions, I’ve made some test, and removed all lights (DirectionnalLight & SkyLight) and still have the problem.

I’ve tried to use “high resolution” in the movie render queue instead, but not working…

Up… still stuck here :frowning:

I’m not able to find any kind of solution…

Are you running out of memory? When you get near the top of your card, UE will offload things from memory, for better or worse, in an effort to prevent crashing. What high-resolution settings are you using?

Also are you shutting off all screen space effects like lens flares, lumen screen traces, vignettes, auto exposure, local exposure, etc…

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Thanks a lot for your answer, really appreciate.

I’ve tried to desable those, but sadly still have the same problem.
Regarding memory, (I had a 3090 with 24) and now a 5090 with 32 go. I’m using them all + half of the 32 go of shared memory.

However with a resolution of 7680x2160 things are working fine, also with the 32 go of dedicated fully used and a 8 of 32 go used for the shared.

It’s a very important project for me, still trying to find a solution.

Thank you!