Rubber banding/lag problem out of nowhere

I do not think it was after any one specific update, although I could miss something. Just saying, since after every single update there are always random people who suddenly have problems. 

The game worked without issues during Beta for me. No lag, performance problems or rubber banding at all. I bought the full game not so long ago, still no issues for a week or few. Eventually, some weird problems started. I would play a match like normal, and suddenly, it is like the entire server desynchronised. I could walk around with people and vehicles jumping all around. You know, the classic things that happens after your internet is disconnected that you see for few seconds before it kicks you from the server. However, in my case, it did not seem to be the case of something actually happening with the internet (it seemed to work fine outside Battlefield). It would never go back to normal in that match, but it would also not kick me out of the game. This happened every few games, so I assumed this is some problem with servers. It was like that for some time, but eventually the problem became more severe and started to occur in every single game in different way. And worse and worse with time. First, I noticed that it occasionally started to feel like moving through jelly. Other players would jump back and forth, hits not registering, delays and other classic things that looked like lags. Last few days, the game became unplayable. Every single match is just horrible rubber banding. It can work fine for few seconds, but as soon as something starts happening on the screen, rubber banding is back.

- Specs: i7-11700f, GeForce RTX 4060, 32 GB 3600MHz ram. 600 mb/s on a cable (internet works fine, I am almost sure of it, unless it is something about my settings)
- My ping is usually 20. It stays the same when the aforementioned problems occur. Though rarely weird things happen here as well, like showing 10 thousands.
- I noticed that now, it looks like in BF6, CPU seems to be bottlenecking GPU, but I did not have any problems with performance or lags just few weeks ago. Plus, I don't seem to have any issues with other games. Although when looking at usage while playing the game, both CPU and GPU are at 60% (at least in task manager).
- It does not seem to make a huge difference if I am playing on high or low. Previously I could play on medium-high with relatively stable FPS (and no lag).
- I tried setting everything to low, capping FPS, reinstalling BF6, removing settings, opening ports, user.cfg trick etc. No difference.
- I have never had such problems in any other BF game to such extent, or any other game for that matter. On this specific rig I played BF4, BF1 and BF 2042.  Also some other online titles. All worked fine.
- I've heard this might be issue with regions or EA servers, but in my case it is the same on all the community servers that I tried.

Any ideas or pointers how to determine what is the problem? Anything. I would appreciate any help and suggestions, I am at my wits end. Maybe someone managed to fix similar issue.