CnPack 1092 interferes with IDE response

I don't think I have ever seen this before, but with default features enabled in CnPack on Delphi 10.2.3 running on 64-bit Windows 10, te response to the mouse wheel in the editor is so very slow it is almost useless. The left-click is only slightly better. Turning off all but a few options has helped quite a lot, but it still seems a bit sluggish.