WP Stats very slow

Latest WP Stats seems to affect and slow whole dashboard. While it is trying to connect to Stats (the various elements just keep scrolling)I cannot access anything else (posts/pages etc) – seems to lock the whole dashboard up. Takes an age to load all the various elements. With WP Stats turned off all is well. I’ve had to leave it off for now.
Never had a problem with this otherwise excellent and helpful plugin. Is anyone else experiencing this please? Thanks. Geoff

https://ww.wp.xz.cn/plugins/wp-stats/