Site is going slow while loading something that makes errors

Technical Details

Forum version : #phpBB2
Position : Administrator
Concerned browser(s) : Google Chrome
Screenshot of problem : http://www.photo-host.org/images/2017/01/29/XWJtOHy1.png
Who the problem concerns : Yourself
When the problem appeared : About 2 weeks ago
Forum link : http://gamemunity.team-talk.net/

Description of problem

From the last about 2 weeks ago, i m having an issue with the site. It's trying load some f29.maxns.net (you can see in screenshot) and making errors constantly which i don't know what the hell that is and making the site slower and slower to use.
But here is the funny part, this problem doesn't happen when i m logged off, only logged in. I tried using IE and it's working fine even when logged in.
I used ccleaner to "fresh" chrome but it didn't work. I even reinstall chrome but nothing.
Other sites made from forumotion are working fine.
What could be the problem?

Regards,
Jakovec12

You forum loads fine for me.

your site loads in 09 seconds when not logged in.

but i don't have a test account on your forum to log in to to see if the problem is there for me when logged in

If you have a test account you can pm me then please do so i can test your loading speed when logged in.

Also if you have any JavaScript's running it maybe a good move to turn them off and see if the site is ok then.

if yes then turn them back on again and turn one by one off until you find the one that is showing your problem.

Thanks for helping, i finally solved it.
It was the chatbox making me the problem.
http://www.photo-host.org/images/2017/01/31/EqYRuPg.png
http://www.photo-host.org/images/2017/01/31/yGx2qNgW.png

It was loading the site all the time because of the error in chatbox as you can see in screenshot, making slower and slower to use site.
It's deleted now and working perfectly.