I am experiencing a significant decrease in performance in the 0.62.139507 experimental update.
0.61: https://www.youtube.com/watch?v=wkqg7xnhb-Y
0.62: https://www.youtube.com/watch?v=UYiQkHB3_mo
1/3 fps are pretty much gone. It's like this almost everywhere on the map but most notably near forests.