The servers in this game are extremely bad, they can't handle the stress and amount of data and processing. Especially on weekends, you will notice crazy lags and it happens to whole lobby. It's so bad that the game runs in slow motion sometimes. But, this has been an issue since Warzone 1 and I don't think there's much we or them can do to fix it as it seems. But also, your GPU/RAM is not good enough either for heavy games.
Here's my specs:
Intel i9 13900K
RTX 4070 Ti
32 GB DDR5 6000 MHz
And yet, when the servers decide to "die", I'm lagging like I played on a PC from year 2000.