Input lag

I am experiencing SERIOUS input lag. So much so that halo 5 is unplayable, but when i start up other games they play perfectly no input lag no problems at all. I use a regular xbox one controller. Any advice would be greatly appreciated

I don’t know if its my internet but this last two days (between 8pm-10pm) I have had terrible ping, between 800-1300 :(. Are you sure that your problem is about input lag? I’ll see how’s today my ping during the night.

I checked every conceivable thing with wifi
ping connection all that everything said it was working fine.