Based in the US. Sorry if a bit slow. Here's a smaller Tokyo server: https://tokyo.cloudbrowser.xyz/

Sessions are ~ 30 minutes

you should install extensions like uBlock and others to minimize memory and CPU usage

consider some sort of blacklists to minimize spam & abuse

really? I have the open-source adblock patterns from one adblocker installed at the fetch level blocking requests. You should see at least some ads being blocked.

I get you're just trying to be helpful thanks. Actually memory, and CPU is not such an issue for any browsing unless people are cryptomining or playing online games (like quakejs). I've got scripts to try to watch that usage and cut people off.

Chrome is pretty lithe with most usage.

In terms of blacklist do you have a good ref point? Also...what sort of spam/abuse are you thinking? I didn't consider people browsing open internet to be risky re: content...I thought all bad stuff is on the dark/tor web.