You could practice hand ball against a wall or table tennis by folding up one end of the table to play on your own,that incorperates good footwork eye to hand cooridination as well. Later you could stain the ball more the same color as the table that'll test your visual reaction to action links out on the next level.

Do you blink when shots are thrown at you? That will get in the way.

There are also some people (quiet rare) who suffer something called sensory processing disorder and that can real effects on comprehending distance ,speed and timing. They usually find out crossing the road as a kid or later out in the traffic which can be tragic.

You can also try not looking into the eyes of the opponent for a while and use your peripheral vision by looking through their mid section and react to their elbows moving instead of their gloves,that can reset your timing a touch.