All about feel. If it is rough or jpolting or you feel like you want to post your wrong. Heal him past it, You will kinda get to a sweet spot depending on the horse.
General Beauregard is more show stock and kinda high step racks at speed. Probably around 8mph, he will transition into a lope also butter smooth.
Miss Emma, will flat runwalk up to about 12 till she breaks into a throw you out of the saddle somekinda I don't know what she is doing butt lift canter. First time I rode her I thought she was trying to throw me. As she gets in shape she is getting a bit better. But I hold her to a runwalk around 10 mph. Today put 10.3 miles on her at 8.7 mph.. took us 27 minutes to pulse down... so got a ways to go yet.