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sang wrote: thank you kirgman if you need or want looking my computer i'm always anytime open windows remote control (anydesk) program i will send to you my project please check your e-mail and understand my poor english language skill

Hi Sang! Thanks again for your scene! Sorry for veery long reply, I was too busy developing some renderer parts.
I have looked there and detected the reason of low performance. Basically everything is nice except of the emission material "LED_Beige". This material is assigned to selection of the building which forms a light shape around the building of the very irregular form. In fact the internal emission algorithm doesn't divide this shape too deep and hence doesn't result in the nice noise reduction. The other emission materials work fine in the scene: the emissive objects inside the building and the stree lights, etc.
The receipe to fix the issue:
1) Reduce the emission power of only "LED_Beige" to something less than 10 and make importance sampling Off. And you will see how the noise would be reduced a lot.
2) Manualy divide the selection of polygons that have assigned LED_Beige into multiple different objects of simpler shap.
3) Wait until I make #2 as an automatic internal process as part of more complex noise reduction algorithm. The main concern is memory but there are some ideas. Basically this process is implemented in the renderer core, but it doesn't divide to deep as is needed for such an object. So the further improvements are needed.

Kirill