Yes, bigger lots are slower than smaller lots, usually because they've got more stuff on them.   You can either play smaller lots,  figure out which stuff makes a bad situation worse (like the Energizer) or learn to ignore the slowness.

Don't forget to run Hack Conflict Detector to see if you have two mods using the same bhav. I don't know this Multialarm, but if there's something to do with the burglar, I suggest you think twice to use it. The burglar bhavs affect much more things than you think. If it is, what are you trying to do, to avoid the burglar? or just be informed that he is on the lot? Everytime you use the option "reset" to correct a mistake, it throws a log in the Logs folder. To turn the testcheat off is a good thing because sometimes you know that the mod is not the best in the world, but it does what you want to do and it is just a temporary solution until you find a better way to do it. To turn it on, will just make your game practically unplayable because it stops the game for Everything, even the smallest thing that can be even insignificant. Some errors do no make your game unplayable, the normal course of the game causes problem because we always want that it does What We Want. It is simple, otherwise no one would mod it. The slow down of your game can have been caused even by a command that your sim cannot respond. You know the game is composed of automatic commands that are send to the sims all the time. It can be : Send a wolf, or Send a Stray, or Make this or that, and you have a mod that doesn't allow this. So the game will continue sending the command over and over again until it is satisfied. And will do this until there's no more memory available and your game freeze or crash. You have to find what is causing it and find a new solution. Maybe your game is trying to send a burglar, it is a math calculation that is on the background full time.

True, but there are a few Maxis objects (and more poorly made downloads) that throw errors for no good reason.  Odds are, the Sim will still "jump" to indicate the errors even with debug off.

To the OP: do  you have a log file you could post?

Error message: are  you playing with testingcheatsenabled  on?  If so, turn it off!

Downloads: That's not a lot of downloads.  You can try moving (not deleting) your downloads to a safe place.  If that doesn't speed it up, it's not your downloads!

Slowness: It's possible your computer as a whole is slowing down and it's showing up in the game first.  Try doing a ScanDisk and Defrag.

If you get an error on a particular object, then remove that object, or you'll only get more trouble.

It sounds like a mod conflict or a problem with a mod made for an EP you don't have (which I can't be certain of, since you didn't list your EPs/SPs.

Take out any mods/hacks you have and see if your game runs OK. If so, one of them is the problem and you'll have to run through the slow process of testing them until you find the culprit.

I don't know. Since it's only been just under 24 hours since you asked, all I can recommend is for you to be patient.

Have you tried searching on other sites (MTS2 and MATY, to name a couple)?

I wouldn't worry about it too much. I've done it a couple times myself. LOL.

It's because there were extra bits in your code you didn't need. I fixed it for you.

You still need to provide pictures and host them on your own image hosting service to link to here:

1 - Full face
2 - 3/4 face
3 - Side face

Please read the site rules about hosting images and this section's rules about providing specific pictures of a Sim you want made.

Direct linking to the pictures on those sites causes them to use up their bandwidth a lot and cost them money in the long run to continue hosting their sites.