Why does my Mac accumulate too many processes?
You have the program Surveyor Power Management from Aptean installed. This is usually installed as part of a corporate setup, and is used to manage power saving settings across all the company's computers.

Unfortunately it seems that the program has a bug where it is not compatible with High Sierra right now. The effect you see is that it spawns processes intended to set power saving settings, but due to a bug it spawns them over and over again because it "thinks" that they failed. This severely limits performance of the computer and eventually halts it completely.

The only thing to do is to report this to your IT department and/or directly to Aptean to ensure that the software is fixed and updated.