@Jonksten I'm literally going through the same thing and I'm glad I'm not going through it alone...although it isn't fun. For me, it happened last Tuesday and I haven't been able to touch the game since. I really thought it might be the new router but nothing has changed, so I've begun to rule that out. Everything works extremely fine except Apex.
I start up the game and my ping suddenly spikes and I go from fighting to on the ground in seconds, no clue what happened. I've gone through all the fun troubleshooting stuff and same results every time.