How to make Matomo don't consume so much resources?

I have matomo installed on my shared hosting that have limit of 8 php processes, and Matomo eat everything when I’m runing the dashboard. Even small images are run via php. Is there a way for matomo to not run so many php processes, because of Matomo Google bot thinks that my website is not Mobile friendly because It can’t load css files when Matomo is running. When I open dashboard it never load all images because got 508 errors limit reached. And this is only when I run the dashboard I don’t want to upgrade my plan because 99% of time I use 1 php on my shared hosting.

Is there anything I can do to run less processes maybe rate limit the system?