'Accuracy' / Level of detail relative to sim speed

[Harveysimpson]

I was playing chess on my phone tonight and there was an option to give the engine more.time to think to process the next move and it got me thinking:

Does the speed at which a match is simulated affect the data it churns out?

If I let the pc call my plays and SIM the match on slow is it more detailed / accurate than if I was to SIM the same match on fast?

How about simming individual matches compared to simming multiple seasons in a row.

Can anyone shed any light on this matter?