there is a tissue Issue,
When activating Tissue addon in 2.8x and 2.9x i experience heavy framerate dropping when moving Meshes or curves this occurs in object and edit mode. when no objects are moved i can normally move my viewport. In the outliner renaming components is mostly impossible because double click does not catch up.
it feels like tissue is constantly checking for the new position daa and so is slowing blender down
i hope this report is in the right section
Best
lee