Get rid of Securom if you play Sims 2
I keep seeing people talk about Sims 2 bugs that they ascribe to either Windows 10 or the Ultimate Collection that are actually due to Securom. For instance, if your buy/build catalog is lagging, I can almost guarantee it’s because of Securom.
Securom’s always caused problems, but Microsoft itself has said that it’s incompatible with Windows 10. They purposefully broke compatibility with Securom and other old DRM programs because they make one’s system more vulnerable, so you need to get this thing off your computer. EA did not remove it from the Ultimate Collection on Origin (which was irresponsible of them), so you have to do it yourself.
Removing Securom is very easy to do and only takes a couple steps. Here is a clear thread on leefish about how to do it: http://leefish.nl/mybb/showthread.php?tid=6688
Before reinstalling, rolling back, anything else, try removing Securom. Even if you have no performance problems, if you still have Securom, get rid of it. It’s not a safe program to have on your computer.