I need help with my Audi a4 b8 2.0 tfsi from 2010

I was getting on the motorway when I suddenly felt something was wrong, so I took the next exit. When I pressed the accelerator the car would shake, but once it was actually accelerating it felt fine. At idle it was running rough. For nearly 90,000 km now, at low RPM when decelerating it made a sound like a bicycle freewheeling, that sound has now gone away, and instead it makes a high-pitched noise when accelerating. I drove it 10 km max to get home.
History: at 105,521 km (2017) Audi did a warranty repair for excessive oil consumption (1.42 L / 1000 km). They replaced the 4 pistons and 4 conrods, the bearing shells, one marked intake valve, the chain tensioner (06K 109 467 K), the tensioner mounting bracket and the oil scrapers, and skimmed the cylinder head. The car is now at 266,880 km.
I’ve scanned it and had misfires on all four cylinders plus a boost-related code. I’m not sure whether it’s the timing chain or not.
Thanks for the help