Impact of ScalingModSize and/or FirstModSIze choices

Library Questions
1

Are computations for faster for lower values ScalingModSize and/or FirstModeSize? Or is it generally better to use the highest values allowed for a particular ring dimension?

Also, does the values of ScalingModSize and/or FirstModeSize impact the sizes of the ciphertexts, as in the space they take in memory?

I am wondering about this for BGV, BFV and CKKS. If it is relevant I am only doing computations for multiplicative depth 0 or 1.

2

Are computations for faster for lower values ScalingModSize and/or FirstModeSize

Same performance unless larger values force increasing the ring dimension. Higher values of ScalingModSize improve the precision.

No impact unless the ring dimension needs to be increased.

3

Thank you for the answer.