My issue is that I am unable to break end portals I tried water but that only removed the blocking placement thing pls help.

Use /portal delete_portal to remove the end portal

About the lag, are you using other mods?

It's very weird that it lags. To debug this, I need you to 1. only install IP and uninstall other mods 2. Enter game, press shift+F3 3. experience lag 4. post the log (logs/latest.log)

It mainly lags in root.gameRenderer.level.render_portal_total.render_portal_content.terrain which contains the solid block rendering(CPU side),
IP cross portal entity rendering and IP render list prune.
The performance is affected by many factors. Does it lag after playing the game for 5 minutes? Does it lag with my sodium fork?

And you can try disabling the cross portal entity rendering in the config. And try command /immersive_portals_debug cull_sections_behind_disable to disable the render list prune but I doubt that these two things cause the lag

Why do you want to uninstall faric