if you can hit the keys with more top down force instead of diagonal, that should reduce the slipping problem.
Overall, if you are pushing so deep INTO the key such that there is enough finger travel to go INTO Slippage, You are exerting too lengthy a keystroke.
Reduce your impulse duration.
Typing is unlike piano, in that you are never suppose to hold the key longer than necessary.. Everything should be Staccato. !!
Check out my typing speed guide in my signature below..