so ive been running these static residential ips from a couple providers for about a year now specifically tied to puppeteer extra with the stealth plugin and its pretty wild how stable it is for stuff you just gotta leave running. im talking like multi-hour login sessions or filling out forms across 50 pages where any hiccup means starting over. datacenter would get nuked in minutes mobile rotates too much and breaks the session. these static ones just sit there look like some dudes home internet and the target site doesnt even flinch. my setup is puppeteer extra on a vps launching the browser instance with the proxy injected at launch using the --proxy-server flag and then letting stealth plugin handle the fingerprint. key thing is i set a crazy long user agent session string so it doesnt regenerate per page and i disable any automated headless detection overrides that might cause inconsistencies. also using a specific profile directory so cookies persist exactly like a real user. the main use case nobody talks about is when you need to maintain state across dozens of actions over hours not just quick hits. stuff like monitoring a dashboard that requires auth or slowly submitting data to avoid rate limits. rotating proxies are garbage for that lol. one provider gave me the same ip for 8 months straight never changed once cost was high but saved me probably 200 hours of debugging failed sessions.