IP is naturally a laggy world unfortunately and there's not much you can do about it.
Have you tried the suggestions from here?
http://sims3.crinrict.com/en/2014/02/lags-in-islo-paradiso.html
I'm having the same issues.
I'm running:
GIGABYTE GA-990FXA-UD3
Radeon R9 290 GAMING 4GB 512-bit GDDR5 PCI Express 3.0 x16
AMD FX-8350 Black Edition Vishera 8-Core 4.0GHz (4.2GHz Turbo)
G.SKILL Ripjaws X Series 32GB (4 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
I've done ResetSim * several times and it just keeps reoccurring.
Any help would be appreciated.
