After the September version update I have been having issues where the game will freeze while I am opening my inventory or scrolling through it. Sometimes this lag issue occurs for 4-5 full seconds before it recovers.

System: Custom
Windows 7 Ultimate 32 bit
GPU - 470 GTX

I am running this on two computers with the same GPU and same drivers however my main computer does not have this issue at all, it is only my old computer.

Turning down graphics doesn't make any difference, while population within area seems to make the issue worse it is still present in areas where I am the only person.

I tried doing a fresh install, this made no difference.