Maybe for american English, but put an accent in there, or even just British English and it goes down, fast. I'm currently watching Taskmaster on YouTube and every time it's not crystal clear audio with no background noice, it's closer to 50% miss
For Russian, which I don't understand, the result is maybe 50% intelligible (particularly when technical jargon is probably involved). But 50% is still infinitely better than what I can do with Russian myself (0%).