Input Delay on Mouse and keyboard on Xbox one

There is always input delay because games on Xbox and other consoles aren't designed for keyboard and mouse and to even the odds it's built in by developers to stop cheating

There have been some reports of Fortnite Xbox One players experiencing input latency when using a mouse and keyboard; a delay between moving the mouse and a subsequent on-screen action.

If you have multiple mice in the home, switching it out could be a temporary fix until the issue is properly addressed

Yes ive tried everything i could find on the internet i bought 100$ keyboard and mouse cause i thought my last one was just bad but the input delay is still the same

Unfortunately it does not register the Mouse and Keyboard input for Xbox One.

You're welcome JoshCostica

If possible, try using a different keyboard and mouse just to test.

Also I can advise you other two things more to try in case you want to give it a shot:

1. Factory reset your console but keeping games and apps
Open Settings > System > Console info > reset and then select keep my games and apps

2. Perform an offline update for your console. In that way Xbox system will be updated from scratch.
For this you need a USB and PC to format it and transfer files provided in the link below (with steps):

https://support.xbox.com/help/hardware-network/...