Here are some tips on solving much of IP's lag problems. I do not take credit for these notes. I don't remember who posted them, but they make a huge difference. Before Starting Islo Paradiso - do the following editing:
Home Problems
1) Evict Akoni Kahale and put him in a house on land. Bulldoze the port
2) Evict Rubisel Ichtaca and put him in a house on land - Bulloze the port. There is another port with a pile of rocks preventing accaess to port. Bulldoze that one also.
3) The Ichtaca castle needs the front door area fixed, and remove some of the trees around the outside of the lot
4) The Medina household needs an extra piece of wall next to the front door to stop Palmira being put down where she can't be reached. Also, at the start of the game their garage door needs opening - Delete the door. (Personally I convert the room to something else - gym)
5) Finally, Devin Han, gets stuck, but the writer doesn't know why. Personally I either move him into another home or delete the char.
I make a save of the edited Starter town. Then I don't have to go through all this editing every time I start IP. However, the caves need resetting every time. See Below:
Resetting Dive Caves to correct resetting of sims:
to to Edit town / Ctl Shift C = T / type: enablelotlocking true (no space)
- using Select button - click on dive cave location icon and click on the unlock/lock button in bottom right corner to enable editong on the lot
- Grab the cave and let it go again / Turn Off Cheats
- go back to Live Mode and try exploring again
Hope this helps everyone. I've enjoyed a relatively lag free IP from these helpful notes.
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Adding these links for additional information:
Removing IP Lag ~ Tips from Ciane ✽ Still works as of April. 2022 and suggests the mod below.
In first post in the thread linked below is a link to Ciane's edited version of IP.
https://forums.thesims.com/en_US/discussion/811253To Use: Make a new folder in your Sims 3 Saves folder called IPonlyRdy.sims3. Copy the four files shared from MediaFire into it. Using the edited save file and the mod helps reduce the lag in IP.
Reduce/Remove Lag caused by Houseboats Mod
https://modthesims.info/d/665907