Photogrammetry is RAM and CPU intensive. I have 5800x, 32GB RAM and RTX3080, and except for photogrammetry areas, I am always GPU limited (1600p ultrawide). In large photogrammetry areas, I am ALWAYS CPU limited. So, as much as GPU is the most important factor to improve fps, a faster CPU will improve your fps in photogrammetry areas only, while it probably will not do anything everywhere else.