what makes the biggest difference to processing times in Cyclone?

i am not talking one specific task, just in general. i have a reasonable beefy machine (compared to what i have been reading people are using anyway) and i don't think it is worth replacing the whole thing in order to get better performance. so was wondering if i could only replace one or two things, what would give me the "best bang for buck" performance upgrade?

Any idea?

Please help.
Thanks!

I didn't find the right solution from the Internet.

References
https://laserscanningforum.com
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