So you have the controlling in your hands? Your Hoyer yes? That means HE didnt give it up, you did.
Why blame the sliders? Or the game?
Ive done slants many times and guess what? I complete about 70% of them. Why? I checkdown. If I look left or right and my reciever is playing patty cake with the CB I checkdown. Its really simple.
Play more zone, play more zone blitz. Mix up your play calling. Cover 2 kills slants all day. There defenses that work just fine against slants. Heck just call safety deep man press and make sure those corners press. If you have no pass rush guess what? There going to go 14 for 14.
All out blitz's will be destroyed by any halfway decent QB.
Find the plays where your R and L outslide linebackers zone RIGHT there. Put your safeties down in the slant area in a zone. There, done, the slant is stopped.