Virtual Shadow Map Pool Page Overflow

I’m trying to use virtual shadow map and the packaged build has this warning poping up every few second, how to fix it?
I searched internet about it and I heard the command line “r.shadow.virtual.maxphysicalpages.” also r.Shadow.Virtual.MaxPhysicalPages=xxxx"
both of them don’t seem to work for me.
I’m using UE5.1

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It seems to relate to my scalibility settings. Whenever I lowered the scalibility group settings in the .ini file to below 3, the warning will show up.