I feel like that matters less the slower the simulation runs. Simulated RF interference would operate at a much slower timetable than the host system, and I don't really think the host system's RF matters so much until you're at speed parity with the original system and hoping to interface with hardware peripherals.

Absolutely! Seems like if hardware run something simulated at 50% speed, and want to also simulate rf, would need to half the wavelengths of the rf, and some of it may enter into mush zone.