For start I believe you are using part that is "too complex" and "too big" for this test. You are fighting with Simplify3D properly recognizing bridging, time to print the fairly big part with the unknown of the "new material".
May I suggest you try something simpler, like this for e.g.: https://www.thingiverse.com/thing:12925
It is perfect bridging test, prints fast, Simplify3D properly recognizes the bridge, so you remove all the obstacles you have and just focus on the bridging thing. Running it at 0.25mm layer would in my opinion be optimal for test. There is also a scad file so you can shorten it to 3cm if you don't want 5cm for testing (in my opinion 5cm is perfect).
Furthermore, you can drop 5-6 copies of the same model on the bed, set each of them to be printed with a different process and create 6 "same" processes with a single change on each of them. For e.g. you put 5 of them, 5 processes, all same except speed is 50, 55, 60, 65 and 70% for bridging. You find the best one, next session you print 5 again but speed is same (whatever you find in prev run is best) and you select different values for multiplier 80, 90, 100, 110, 120% .. do a run etc etc ...