I haven't seen anything special.
However, since your profile says you have spent more than half a year of the last two and a half years of your life playing more 10,864 ten minute games here, I assume you know what you are saying.
Have you ever tried a premium membership here? They say you get faster load times and no ads.
The other possibility is that you've worn out your mouse or something on your computer.
It's gotten to where I never know if a piece is going to move or what it's going to do. I try to move something and it stops in the middle somewhere. Are there any other chess sites out there? This one is having major problems.