Hi all,
There is more than one issue happening here. The main one, which caused browser crashes and very slow loads, is new, having started Sunday or Monday and should be resolved now. Nobody should be seeing very slow page loads or anything like a browser crash. If you are, please clear your browser cache and try again. If you started seeing this behavior over the last few days and you're still seeing it after you clear cache, please let me know, as we believe it is now resolved.
Other issues, which may have been happening for more than a few days, are unrelated to this. We're doing our best to address those too. If there is a particular ad that seems to be causing issues (autoplaying with audio, slowing your page performance, etc) let us know and please post a screen shot of it!
Thank you,
Paul