My site has been slowing down in the WP Dashboard considerably and the editor in WordPress has formatting issues. None of the headings appear as headings. They all look like paragraphs. I activated and deactivated all my plugins to find out what was causing the issues and it looks like the Post Grid plugin is the cause of the issues. When I deactivate they plugin, the Wp dashboard speeds up and the formatting issues in the editor go away.
I had a site speed developer look at the site and he said that he wasn't proficient enough in CSS to make the changes to fix the editor. For the speed of the site, he said there is no real solution except to have the plugin fixed or to use another plugin.
I noticed that the site speed got worse recently and tried downgrading to an earlier version of Post Grid, but both issues still persist.
I am not sure what to do here. I really like this plugin and need it for my site. I have around 100 pages on my site that display grids.
Any help here fixing the plugin would be appreciated.

Hi,
Do you have any updates on this? Are you still experiencing the issue? We are very close to releasing an optimized update, and we hope the latest version will work better. Could you please let us know which block you are using?