What is the weight of the stability sub in the valuation function?

Stable sub-judgment is a very time-consuming process.

At first, I thought it took a lot of effort to optimize this part.ProgramBut the time consumption still accounts for about half of the overall valuation. Later, it was found that in most of the strong chess games, there was basically no stability before 40 steps, so a lot of computing is actually a waste. From the 40-step start, you will always start searching.

Now I think it may be important to add the stability sub-judgment from step 1. That is to say, the valuation function needs to change at different stages of the game.