Yes, of course.
I have no opcache related warnings at /settings/admin/overview
One thing to keep in mind is that you normally access your cloud more or less often and you have many things cached, so not everything will be loaded again. It is certainly a good idea to optimize the size and performance but this doesn’t mean we have to get a score of 100 at google pagespeed.
If you run it at home, most of users are depends on a lower Upload speed of provider, then it make sense to reduce size of login page at all.