"Painting" effect PT

Please tell me! Is it possible to reduce this effect? It is very noticeable in the night pictures, and it is also present in the daytime, but not so much. Thank you in advance!

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TM2023.1/ RX6800XT 16GB / Ryzen 9 5900X / 64 GB

maybe you just have to change path tracer setting from low or medium to high

sempel per pixel = 1000

well, in this case this is twinmotion bug. i have also faced this problem but with 80 sampels per pixel

There is an option that allows you to adjust the noise in the image. Also by adjusting the number of pixels, you can reduce that effect.
To edit the number of pixels, you must go to where the path tracer is configured, to the right where it says render. Then under low, medium and high settings, there is a tab where if you pull it down, you can edit it.
But in my case when I increase the number of samples per pixel and export in 4k, it either crashes or takes more than 5 hours per image.

I hope my answer helps you