Is it possible to disable the super long 'slow start' feature on this controller?

[Tezzy]

On this controller, whenever I apply throttle there's a really slow spool up time of about 12 seconds. If I let go of the throttle going up a hill, it resets to 0 and slowly begins ramping up over about 12 seconds until it reaches the speed I'm going. This makes riding the bike a less than ideal experience and I have to forward plan when I approach a hill and make sure not to release the throttle. I've not had this on my previous ebikes. I have tried replacing the controller with a KT, which gave me the normal quick spool up time that I expect on an ebike, but I destroyed it as well as a second unit, possibly because the 5 pin 810 display is killing the controllers somehow. So, not wanting to waste more money taking a third gamble on a controller I'm back on the stock controller and wondering if there's any way to turn off that soft start. The 810 display that came on the bike is the 5 pin, which someone said is a digital version. Is there a series of button presses that could change that power curve or perhaps something internally that could be jumpered or modified?