(wakes up in a daze, haven't had coffee yet, it's far too early to be so confused...)

Yeah, I seem to have lost track of things here. We hadn't tackled the sgr file settings changes yet when I was last here, just the frame rate capping. sittingbear's instructions are the correct way to proceed with both the graphics card recognition and the texture memory override when we do get to them.

Also, let's read that line of the DeviceConfig properly if we could. What it is saying is
GPU: 5 (on a scale of 1 to 5)
GPU Memory: 1 (on a scale of 1 to 4)
CPU: 3
RAM: 4
etc.

It's just not spaced out very well. The reason that the GPU Memory is ranking so low is probably that the card is not yet recognized. Sometimes that fixes it, sometimes not. Let's take these things in proper order, if we could.

-- Make sure your Game Options are where you want them to be. Advanced Rendering in particular should be on (checkboxed) and most of your options can be set on the higher end with that card. The exceptions are Reflections/Mirrors and Water (use a medium setting) and High Detail Lots should be no higher than 2 to start. The most typical cause of grass and snow looking like colored (or white) blocks and having no texture is lack of Advanced Rendering, but if it's really something else we will get to that.

-- And what are we now getting for frame rates regardless of what the game looks like at the moment as the game plays and the game camera is moved around? As shown by the fps on cheats code, are things now locked at or under 60 fps, or whatever the refresh rate of your monitor is?

-- Then we proceed with the sgr edits, the one on GraphicsCards to get the game to "borrow" the profile of an older card it already knows about (sittingbear suggests using the Nividia GTX 650M, I would have gone for the 470, but the results should be pretty much the same) and the edit to the GraphicsRules file to get rid of the 32 MB texture memory override.

The files will not be where you were told they are as you have a Steam install. They will be under Program Files (x86)\Steam\steamapps\Common\TheSims3\Game\Bin. Make sure not to go under any of the EP subfolders along the way, there are sgr files in those as well but those do not need to be altered. The ones in the path above are for the base game, and those are the ones we are targeting.

-- And then we see what the results are by way of a fresh DeviceConfig if we could. Let's save those re-ranking rules on seti gpumemLevel for the end, they may not be required.

If you are playing in Windowed mode, whether that be the standard kind or through Windowed Borderless, then vertical sync as per the Nvidia Control Panel doesn't work. It's only for full screen and needs some help, this is where Nvidia Inspector comes in, and on this one we can explicitly set the Frame Rate Limiter to 60 (or again, whatever the refresh rate of your monitor is). Also as the illustration shows, Vertical Sync should be Force On; it probably already will be because of the Control Panel changes. The Frame Rate Limiter setting is above that one, at the beginning of the same section.
https://forums.thesims.com/en_US/discus ... t_16540301
(second spoiler for an illustration)

Nvidia Inspector needs to be downloaded and installed, it doesn't come with the graphics card.

https://www.guru3d.com/files-details/nv ... nload.html
(look for the Download links 2/3 of the way down the page, not in the upper right corner where there might be rogue adware if you do not have an Ad Blocker active)

This is much more important to sort out than the formal graphics card recognition thing and should really be taken care of first.

That's fine, plus or minus 1, 2, or even 5 fps is not going to hurt anything. So what are you getting for frame rates in the game now?