What if you select [2] and accelerate slowly to 30-40MPH and hold it there?

I just tried it and I couldn't get my car to do the surging.

How about if you do the same thing, keep going at 30-40MPH for about ten seconds, then select 3. It should shift to the next gear. Now keep going the same speed for a while. Any surging?

I've had life happen to me so I completely forgot about this thread, but I will go and test this after work and report back. Thanks for the help.

I could not get it to surge at all during my last drive, whether it was when I was testing what you said, or even driving normally. As I mentioned before, it seems to go away and come back, and as of now it seems to be away. This issue has completely confused me 😂