Thanks for the feedback! I'm not sure why Itch is flagging your posts for moderation -- seems like they might have made some changes to the system while I was away :( But since I got this post hopefully others will come through going forward.
Thanks for spotting the issue with John Solver not pointing. I screwed up the image name of that segment. I've upload a quick fix for this so it should now be working. Yeah, the demo is my own version since I couldn't get yours working for some reason. The inconsistency in the timers is likely because of the overhead of the webgl rendering which wouldn't be an issue in your html version. It seems to run fine on my system, but I'll see if there are any obvious adjustments I can make to your code to try to improve this. You should notice an improvement though if you lower the quality setting. I did a quick check now and the score seems to add fine after the scrolling level ends before starting the next level. I'll test some more. I did disable the feature to turn off the sound by pressing the down button to avoid players accidentally doing it and then wondering why there isn't any sound. They can always use the volume control on the toolbar if they want to mute sounds.