Well, yes and no.
Here are some basic things you can do to greatly improve render performance.
1) Remove walls, ceiling, etc. Don't render enclosed scenes if you don't absolutely have to. Rebouncing of the light rays will slow things down considerably otherwise.
2) Do not use very weak light sources, they will create noise, a lot of it
3) In your render settings enable firefly filter and set "nominal luminance" to about 800
4) render the complete scene at normal resolution and denoise it (remove figures before rendering if they don't cast shadows on anything)
5) spot render the part where your figures are in double resolution, try to denoise it and overlay xx% with not denoised image, then scale it down to normal and overlay it with the background image
Most of my renders take less than 10 minutes in 2560x1440 resolution and I only use 2x 1070ti.
Knowing how to do things often is worth a lot more than fancy hardware.