I just uploaded a version with the framerate on the upper right corner of the screen. btw, are you playing in what system/browser?
About the issue of starting stuck, I think I got it, it was a bad interaction with the itch's iframe and keyboard focus, to workaround you had to click outside the window and on again to finally get the focus. I tried a fix, let's see if it solves the issue. The iframe was also the reason for the fps not showing in the title, pretty obvious.. but I didn't test enough on the itch's environment.
Well, thanks for the feedback! I will take some time to play the games now :)