Performance in the wp-admin area

Hello Catchthemes-Team, I have purchased the Pro Version from Catch-box Pro for more opportunities with the slider. 1) Size: greater width 2) Link to Pages and others That is it, I want to use. At the moment not more. But, the performance in the wp-admin area is very, very slow. The performance in the free Catch Box Theme is very fast and OK. When I activate the Pro Theme, I have to wait after a Click from twenty to sixty seconds. I have installed a new WordPress an check the Performance. It is the same. Very slow performance. I use the the actual WordPress Version and the actual Theme-Versions in the German language. 1. Question Why is it so slow? What can I improve, to make it so fast as in the free Catch Box Version. 2. Question Is it possible, to use the slide from the Pro Version in the free Version? I combine WordPress, the catch box theme with a shop. The wp-admin area is often in use. The system currently can not operate it properly now. Please help me, thanks in advance yours sincerely, Ralf