emissive material not working properly

hello. i use D5 frequently. but i hadn’t faced this problem before.
i am designing an interior space. i put a material as emissive in a narrow channel, so that there should be a defused glow be seen. but, in the preview or render, there is no light or glow coming out! when i check the material in the channel, it is lit brightly, but there is no light or glow coming out from the channel.
** PS. i tried adjusting intensity, bloom, specular, … not helping.
** i’m attaching 2 screenshots.


Hi, I have this same problem too. It used to happen on my laptop, which has a GTX 1070; however, after switching to a more powerful desktop PC—equipped with an RTX 5070 (12GB VRAM) and an Intel processor with 32GB of RAM—the issue was resolved, even while using the exact same D5 project file.
So, in my opinion, it depends on the PC you are using.
Sorry for my English.