Something you may consider is using a different RT. I have found that the Jazz Acoustic Bass at 60 and 85 tend to be rather busy for my taste. For those ballads, I substitute the Pop Acoustic Bass. It does not have a 'walking' pattern but never 'surprises' me.

Also, sometimes freezing the Bass can be the answer. For example, you may want the simpler 'A' pattern for the bass for the entire song but want both 'A' and 'B' drums. Set all of your markers to 'A' and generate the song. If you like the bass throughout the song, freeze it. You can then restore your 'B' markers and the bass will be frozen in 'A'.

R