I am not going to ask where you play Joe, but some places, Like Vegas are overly sensitive to spreading to multiple hands in plus counts....ESPECIALLY at DD games.
At the risk of repeating my experiences, when I moved to Vegas, there were two things I was really looking forward to taking advantage of that I couldn't back east, where my career began. One was double deck games and the second, spreading to two hands in plus counts (too crowded to do so much back east).
I quickly found both somewhat problematic in Vegas. DD games in general are counter traps, that is to say "hawked" closely. For that reason, I still mostly play 6 and 8 deck games (mostly 6). Bigplayer once said, identify the best game (rules/penetration) and avoid it. Play the second best.

That seems a little extreme, but the logic is worthy of consideration, especially at the known sweaty joints.
The second thing and what you really asked about was spreading to multiple hands. It didn't take long for me to discover that Vegas casinos are much more sensitive to this than other locations. It only takes a couple times of the pit critter, coming over and flipping through the discard tray, looking at the cards, just after you have spread to 2 hands, to receive that message. I am a bit slow, so it might have takes 3 different times of this occurring, before I got the message.

Other locations are different and other's players mileage may vary, but that's been my experience.
If you spread to 2 hands, your wager should be roughly 75% of what your single hand max bet was.