Having the exact same issue too, no problems before the patch. Ranked or trios is totally unplayable. Gun run just about works but still very laggy. Clearly a problem with the update rather than our PCs given most people here have been playing for years.... Might be worth testing a patch before releasing it?
EA won't acknowledge it via this forum. I rang them and they said you need to go on the other side of the forum and report a bug ... only then it will get looked into .
link below
https://answers.ea.com/t5/Bug-Reports/bd-p/apex-legends-bug-reports-en
