Loud low frequency, rumbling engine noise after driving some time (2022 CX-9)

Hey. I've got 2022 CX-9 (USA). And engine noise makes me crazy ( I've even been to ears nose doctor). It is appearing after driving for some time( 20-30 minuets), I take it when car engine/exhaust becomes hot.

Rumbling noise appears between 1500-2000 rpms and it is way too loud. When car is cold there so no such noises. I didn't hear such awful noises in any other car. Dealer said that it is ok.

So, question to the audience: is this flaw specific to my car or everybody's having it?
And maybe someone knows any workarounds?

Thanks
 
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