No power from 2200 rpm Avensis T25 2.0 D4D 126 hp

Hello forum! I drive an Avensis T25 2.0 D4D from 2007 with 126 hp. I bought it as a used car on Monday. The annoying, only after the pick-up on the highway I had to notice that the engine is very heavy over 2200 rpm and actually as good as not accelerated any more. 160 kmh were the highest of the feelings. Up to 2200 rpm everything is inconspicuous. In the test drive, which took place only in the city, this was not noticeable in the lower corridors. The car starts to jerk on the motorway at 130 (approx. 2200 rpm). MKL and so on does not work. Emergency run accordingly probably not? I already got in contact with the dealer and he will take care of it on Friday. In order to speed up the troubleshooting, I did a little research out of interest, which could be the fault causes. Under other things DPF, AGR valve, LMM and (but rather known at VW) turbocharger adjustment/steering. It’s the easiest way to test, where you can just put it there and try to move it. I tried that once, but there’s nothing going on at all. The vacuum box also looks pretty gammy. Would the fixed adjustment speak for this fault picture? What else would you have for ideas?