How to speed up Endnote

My endnote is getting slower and slower. It says ‘not responding’ before it sluggishly moves into action. It is exasperating. I do not understand the solutions suggested in the archives. I tried moving the .enl and .data files to another folder but it wouldn’t work at all then.

I do not understand about reformatting things in word.

I have not changed anything except that I keep adding pdfs, but I only have about 1200 references. My PC is really fast with all my other programs and has plenty of memory and room.

Could someoneplease  help me figure out what to do, but simply and in concrete terms.

I have solved this for now. I uninstalled Avira, my free virus program and Endnote went back to its usual speed. Also speeded up other responses on the Internet…