K-O Key Count in 8-Decks?

Anyone else notice that for an 8-Deck game with a K-O IRC of -28, it takes a very long time for a shoe to get positive or at least the key-count of -6? I often find myself flat-betting for the majority of the shoe, and often with only 4-5 hands at more than 1 unit (as per K-O spread and ramp).

Thoughts?

Tks,

MCS