my site crashes when using this theme

Me website loads the wordplus theme just fine. But when you try to scroll down or move the cursor over the page the site crashes and does not reload. I have tried changing options and colors etc. It still crashes after just a few seconds. The url is: https://infectword.com/. I do remember the site working when I first set it up and i didnt have any issues and everything was functional for an hour or so. Then I left and came back to it and it began crashing. I really want to use this theme, because there is no other theme that offers everything that this one does.