My Game Keeps Disconnecting (PC)

My game keeps disconnecting giving me all the connectivity errors, every one of them , this issue started 6 days ago , some times I cannot enter Ultimate team , sometimes I enter but when I try to do anything it disconnects (Store, SBC, Games), some times I keep trying I can do 1 SBC or go into a game (which usually disconnects) and 1 game I played to the end it was very very laggy while my internet is good. 

Now on my end I have tried everything online

1. Cleared caches
2. Flushed DNS
3. Changed my DNS to 8.8.8.8 , 8.8.4.4
4. Tried another network 
5. Rebooted/Reset my router to factory settings
6. Repaired my game through steam 
7. Updated EA app
8. Allowed the game through firewall
9. Reset my network settings

please help since I am considering refunding the FC26 purchase