I have been experiencing the same issue since the beta. I am on a laptop with a 13th-gen Intel i9-13900H, 32 GB 4800 MHz RAM, an RTX 4060, and a Dell external monitor running at 4K 120 Hz. I have tried all the potential fixes: XMP (which isn't needed for me since my tickrate is well beyond the minimum requirement), reducing graphics settings to the minimum, playing smaller game modes, etc. Many people online mentioned that BF6 may be assigning the latency and server management processes to the e-cores in my CPU. Hence, I tried using ParkControl to run my p-cores exclusively while gaming, but that didn't work either. My CPU never maxes out, and my temps are fine. In fact, my setup can run every other game on the market just fine (with minor tweaks to graphics here and there). Similar to you CobraAF, I also live on the US East Coast, and my server is set to Santiago. I am praying the devs fix this issue because I really want to play the game without feeling like I'm underwater.