And I thought its just my ageing coming quicker to ears than rest of the body... same here, as a non-native EN speaker I can understand every word said in person regardless of whether its US bible belt slang, cockney, some Australians or kiwis, heck even fairly well scottish/welsh/irish (but there it depends how hard they try).

But watching any US movie and I have to either turn on subtitles or blast it so loud that some action scene will probably crack speakers or the wall, since I hate getting lost in plot.

don't forget to insist on seeing Oppenheimer in a cinema with subtitles, if you plan on seeing it; it's a bit harder to find, but hopefully will send a message