Sorry, my lists were wrong too ;D
I have already edited my first post.
I’m lazy today ;D Could you post a short message with your troubles? 
I do not use on-line scanner… Anyway, if you need suggestions, see here at section On-line Viruses Tests
If you disable the option to scan the created/modified files, your system will improve its performance but you will be a little less protected. I think there is no other way: protection requires resourses of the system… :-\ You can choose the situation you fell ‘comfortable’. I suggest, you allow all options of the basic settings and not the advanced ones (or, at last, disable the scanning or created/modified files and allow only the script scanning).
Hope it helps. 