The new timer is very useful. It confirms what I suspected: that the AI thinks for much longer than the limit set in preferences. This time can now be very long, even in the early stages of a game played on 9x9.
After that update I uploaded another, fixing an error that MCTS Iterations (Total) even set below 10000 iters was not working, now is fixed. So when you set it to 5000 actually it had been doing 10000 iters.
Nah, I was setting the iteration limit to 5000 like you said. Now I've also set the time limit lower. It plays quickly enough to be usable again. Too bad it's also weak like before.
Now it consistently thinks for about twice the time limit, which is perfectly fine, but I can't set the iteration limit that high because it starts freezing my browser again. And even at 150K iterations it doesn't seem any smarter than at 5K.