BF6 CPU/GPU overusage causing major latency issues on official servers

The high CPU and GPU usage and low framerates are universal (even in main menu and firing range, not changing very much in battle), but only cause lag issues in affect matchmaking servers, not Portal (most likely because of the difference in tickrate).  Framerate is barely playable either way, and on official servers animations are super slow, lots of desync.  Is there a client-side fix?