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Ah, ok. Its really hard to understand your problem from the video. Now I get it. So if the problem is at idle, can you please take video of all live data pages on idle?

I'm most interested in masses, temperatures and pressures. Especially temp of ambient air, ambient pressure, air mass flow, etc. My idea is that one of your sensors is faulty. That can be charge pressure sensor, charge temperature sensor, ambient pressure sensor, ambient temperature sensor, MAF, etc. What engine may be doing: it decides that combination of data indicates, that turbo is already pumping too much so tries to slow it down.

I had such situation on one car where charge air temperature sensor was giving somewhat high temperature readings (which were not impossible though) and car was doing everything to cool it down. No errors, no warnings, just sluggish. Don't remember if it affected turbo duty ratio.

In your video at the beginning it shows 40+°C on idle, which seems a bit high, because it drops considerably when you begin driving.