Hi Ken, how old is your computer? How fast is it and how much ram memory does it have? I unlogged and stopped my ad blocker so I could get a look at the ads in question. on a web page showing the two ads, according to the task manager I am at 50% CPU usage. I am sure a slower computer would use more resources, which is what I think your problem is.
If you decide to buy a membership the problem will go away, as you will no longer see the ad. Your board will still stay in the free section, and non paying members will still be able to use it.
About not being able to post, make sure you are logged in. In the blue bar you should see logout. If you are not logged in you Will see login. It maybe a good idea to logout, and then login, doing this will renew the cookie on you computer, sometimes they get corrupt. Try this and then we will talk about ad blockers.
Come see me at Systematic Investing group #board-966 lets talk formula plans.