Slow site down 7 points

I have used this form off and on for various websites, but everytime i do the support team has to go to each site i would use it on and do site fixes. Front end visual composer never works on a particular premium theme. Recently my site speed dropped dramatically on one of my sites and usually when their is a problem this is the first plugin i always deactivate and it is usually the problem. I do not like to write negative reviews but these forms take awhile to build and when you pay for a plugin and it’s function is not as good as free ones it is frustrating. I will say thiis though, the support is A1. They respond within 12-24 hurs max and always fix the problem. but i gave up using it, because of the work involved in creating forms and the possibility of malfunction seems to arise at some point. I found another form maker that was free, easier to use and easy to customize in color. I always need supports help adjusting colors and just do not like to have to depend on support for minor things like color customization which should be easier than a free one. Once again support is EXCELLENT. I use only premium themes which have more functions and plugins than free and that may be a reason for it. I just was upset at finding my page speed taking a dump and when deactivating it goes right up. I am done creating forms with this that i eventually have to remove and rebuild. Sorry for this review to developer, but i was really upset and tired of making forms and deletingthe plugin.