1.) Clear out ALL my boosts, by selecting equipment with 0 Boost slots, then re-equiping my Kane 88 equipment and a Desert Camo helmet.
2.) Reset my attributes by switching my player to a sniper, backing out of the hockey shop, re-entering, and selecting a power forward.
3.) Just to be safe, I exited the Hockey Shop again, chose "Apply Changes," and re-entered the hockey shop.
4.) Went into the "Select Stick" equipment menu and pressed Start to enter the Shooting Drill.
5.) Took many slapshots, leaving the left stick in the neutral center position. My slapshot speeds ranged from 81.X to 82.X
6.) Left the shooting drill, and went to the boosts screen. Equipped my +5 Slap Shot Power, and re-entered the Shooting drill. Slap shots clocked in at the same speeds as step 5.
7.) To be safe, left the Hockey shop, Applied Changes, and retried the shooting drill. No difference in Slap Shot speed.
8.) Reset my stick boosts using step one, but I cleared out only my stick boost since I didn't equip anything else.
9.) Left Hockey Shop, went into attributes screen. Added 5 points into Slap Shot Power category. Returned to Hockey Shop, then to Shooting Drill
10.) Took many slapshots again, this time, they clock in between 84.x to 85.x
11.) Left shooting drill, equipped +5 Slap Shot Power boost (so theoretically I should be +10 in slap shot power). I then tried the shooting drill again both immediately after and after "Applying Changes." No difference in shot speed.
12.) Unequipped the +5 Slap Shot Power boost again.
13.) Went to attributes screen, added another 5 points to Slap shot power
14.) Went back in to the shooting drill via Hockey Shop. This time, my slapshots clocked in between 87.x to 88.x