The following image was rendered using 2000 samples. The render takes about 3 mins and the image looks pretty noisy still, especially the wall of the building. I'm gonna have to render a really long animation so I would prefer to keep the samples less than 2000 so it doesn't take forever to render the whole animation.
I searched online for a solution and tried everything that was suggested in this post: How To Reduce Noise In Cycles Render.
It helped some but the noise is still present in the image. I was wondering if there are any other ways to reduce the noise without increasing the sample number (through lighting or maybe using compositor)? Any suggestions are appreciated. Thanks in advance.