343i Please Fix Input Lag with Co-op Campaign

All Halo Campaigns seem to have really bad input lag with Co-op regardless of who hosts or where they’re located. Playing Reach Campaign with 3 friends all on West Coast had huge amounts of delays for them (and I when we swapped hosts). I remember MCC launch had the same issues. I know the campaigns are Peer to Peer but I believe it would just be connection lag if anything. The input delay has to be something related with the code side of things. Were all green bars when playing so idk whats happening.

Will 343i ever fix this issue? Is there any work arounds anyone has found?