I was able to use my new Forrest WWII 20 tooth this weekend. Wow. It's like I have a new saw. Love it.
Seems like the problem is solved but I will add one more thought. I use a SawStop PCS with the 1.75 hp motor and have also tripped the motor overload once with a piece of oak, 1 inch thick, that was pinching the back of the blade despite the splitter. IMHO, one of the issues is the splitter is about right for a thin kerf blade but thin for a full kerf blade. I would like to have a 0.1 inch thick splitter but I have only seen them from Shark Guard and I am not ready to get one of those. I currently have a cheap Wen thin kerf on the saw and it works fine with the stock splitter. But my main tip is when the wood is pinching, put a tapered edge scrap in the kerf to force it to stay open. I've done that a couple times successfully since to avoid issues.
I also agree with the comments about wood that reacts this way. But I often do not want to take the time to go get more wood and start over. So I use what I have if the issue is not too bad.