system
A chat on subreddit /r/wallstreetbets
human
More ticks to go through, same number of seller/buyer parties. You are more finely distributing the available resources. 
  
 10 people sell at 10.00. Now, you can have 3 sell at 9.97, 2 at 9.98, 1 at 9.99,  3 at 10.00, 1 at 10.03 and 1 at 10.05.

gpt
But are there not 10 people still bidding on the same contract?  I mean what does it matter if the bid/ask is more fine?  
  
 If anything I would think you would see more open and filled orders because people could bid closer to what they want rather than waiting for the price to hit a multiple of 0.05.