Grav inside admin dashboard loads extremely slow

Grav loads very slow on my local machine when I access any page under admin panel.

Anyone had/has similar issues?

How slow? Is the site big / with many images?

@flaviocopes, it loads like 30sec or so. Just one image under 100KB, mostly text. I suspect is caching issue but I cannot find a way to always 100% replicate the issue - sometimes it happens and sometimes not so it's harder to investigate.

I will keep my eyes open and write down every time this happens to find the pattern.