RTX 4070 Super - Memory Controller 0-50% spikes at idle - Normal?

[mrpowerupper]

I've got

• RTX 4070 Super
• Latest drivers (clean DDU install > safe mode reboot again > reinstall from offline nvidia file > reboot normal)
• Windows 11
• ultrawide monitor (~3k resolution)

What's weird:

• Memory controller load jumps between 0-30% at idle, occasionally to 50% or even 70% (desktop/browsing/right after turning on)
• Graph suddenly became smooth/stable when gaming. No more spiky behavior.
• Also by the way I was stuttering HARD in hogwarts legacy in hogsmdeade. Is this normal?
• GPU-Z and HWiNFO64 both show this behavior
• Power draw is normal (15W idle)
• Temps normal (36C idle)
• No malware (full rootkit scan done by MBAM, so unless the virus is insanely advanced or something I should be safe?)

I spent like multiple hours being told by an LLM that I may have a cryptominer because of the highly suspicious behavior. I am now thinking it's got its ass in its head. But still. Is this memory controller spiking normal for 4000 series cards? Now I have to know. Was 100% unable to find any corroberating information

I started trying to diagnose and look at problems because of unusual stuttering in hogwarts where cutscenes would crash to 20fps and stay that way for a long time. During this time, memory usage would not match up in my system (process explorer showing different figures than task manager).

Thanks.