keep in mind that you can push stats into GA from the server. I actually made PoC for pushing server stats to the GA - https://github.com/hippich/server-analyti

keep in mind that you can push stats into GA from the server. I actually made PoC for pushing server stats to the GA - https://github.com/hippich/server-analytics https://github.com/hippich/server-analytics The same way you can gather all available stats on server side and push these yourself. You can override IP too. Obviously not everything will be available, like screen resolution, but you still can capture a lot of stuff.