If i may,the buffering isn't really an issue if you let it load a minute or so after starting the video.I will admit,that is not the greatest solution but still the most simple.Or simply download the episode.
As for the pop-ups,use adblocker.I use free adblock software and I don't have any.
I have left it to load for several minutes but that is having NO positive effect on me, and on the daily, I do use adblocker and whitelist certain sites but alas even then the pop-ups persist.
I don't know how to download single episode off of the openload player or if that's even an option, and while I've considered torrenting the arc I'm watching now, I'm on the fence cuz gotten into trouble with my ISP (Internet Service Provider) when I got a whole season of a show way back when, and I'm not willing to poke that bear again. What has me perplexed is I jumped on to this site and was so excited to jump back into the show via this project, but now with these changes, it's become an un-fun hassle. :(
EDIT: Although I could see them putting up to finance the site, not necessarily for the sake of capitalizing on the show's success but just as a way to keep the site up, but the project has been progressing since 2013 so I can't imagine their having money troubles as far as the site goes at this time.