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Sampled pnoise simulation, sampling frequency > pss frequency ?

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Simulating  sampled noise in pss+pnoise, it seems that sampling frequency must be "pss-frequency". Is it possible that sampling frequency is twice larger than pss-frequency?

For example, a choping amplfier, choping frequency is 1MHz, if I use sampled noise (not use timeaverage), I get "wrong" output noise, because sampling frequecy is 1MHz too.

I think if sampling frequecy is 2MHz, then I could get correct sampled (discrete) output noise, is this possiple in spectre? how to confiugre it, thank you!

[Simulator] Spectre 19.1


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