(Insert line about how I've not really posted here before, please go easy on me.)
I've been going cuckoo bonkers trying to fix this issue. I have googled, I have read, and I cannot figure this malarkey out. I made the mistake of installing the wrong version of re-shade, and now I cannot get it back to the same spot, graphics wise.

UPDATE: WHAT WORKED FOR ME
- This water fix. (Use it even if your terrain texture is okay.)
- Save the GRM file to the desktop, then manually replace it.
- Make sure it's the right one.
- Use your video card's settings to improve visuals, if your rig is up for it.
- Be careful with ReShade

LAPTOP SPECIFIC FIXES TO NOTE
- Make sure your GPU is not being undervolted/in low power mode.
- Make sure it's not using the integrated GPU!


The Problem:
I have no flickering issues, thankfully. It's just uggo and I'm losing my sanity. Playable, but ugly. And it dropping to 10fps when I change the camera is not exactly fun. I've got the typical symptoms of "Where's The AA?". It's jagged, it's crunchy, and it somehow manages to even be blurry at the same time. Impressive. The neighborhood view is also hideous. The shore looks like Minecraft. When I reinstalled GRM, that fixed the flickering, and I can play it in 1080p now as well.

Stuff I've tried (to the best of my memory):

• - GRM
  - Reinstall
  - Graphics driver/direct x updates
  - Custom content tidying
  - Googled a lot
  - Told my antivirus to ignore TS2
  - Killed OneDrive
  - Installed Sims 2 RPC
  - Crying
  - Fiddling with GRM settings.
  - Clean uninstalled ReShade (I think. I deleted files I was told to delete.)

The Specs:
OS: Windows 11, 22631 build
RAM: 16gb
Processor: Intel i7-10750H, 2.5GHz-4GHz (when it wants to)
Computer Species: MSI GS66 Stealth (Laptop)

The Video Specs:
Display 1: Intel something or other, 128mb (We don't care about her)
The Real Card (Display 2): NVIDIA RTX 2070 Max-Q,
Total Memory: 16106 MB
Display Memory: 8006 MB
Shared: 8100
Driver: 566.36

Logs:
Graphics Rules: https://pastebin.com/SMtQSBd8
I'm not sure what other logs to include.

I'm sorry if I missed something simple, I may just not know the right thing to search for.

UPDATE!!!!! I forced my graphics card to run all games with AA turned on. It made it waaaaay less ugly. For NVIDIA I right clicked on my desktop and opened the control panel, and adjusted it in global settings. I think it's a similar process for AMD. Intel I can't offer anything. (And re-ran GRM as an administrator for the 25th time) It DOES make my computer a bit more spicy, so if your rig is lower-end it might effect you? I don't know, I'm the guy trying to make Sims 2 run on a 2070. Don't ask me.

Camera lag is still bad, and it's still blurry*, but it's getting better. It's odd that its just the camera, too. It also seems like the game is stuck at 30fps.

*I suspect it has something to do with AA and/or forcing the AA.

Just in case, here's a tutorial for fixing choppy water/bad terrain: https://modthesims.info/t/479610

Is your "smooth edges" setting greyed out ingame (in the graphic settings accessible from ingame)? Just curious, because that's the game's AA, and being greyed out means the game isn't properly reading the graphic card/chip. With your specs I don't see why the game should lag so badly, or look bad, unless it's trying to run on an integrated chip. It's often an issue for laptops with dual graphics.
Manual edit for smooth edges (scroll down) - https://simscommunity.info/2016/04/...es-sim-shadows/
Another tutorial here with a bit of extra info: https://simlili.tumblr.com/post/146373494212

If changes made with the GRM don't seem to go through properly, and your game is installed in Program files, Windows could be an annoying piece in this. It's not certain the GraphicRules file is saving properly directly from GRM. Try saving a copy of the edited file to your desktop (directly from GRM, after editing it), then manually replace it. If you do notice the changes, it's likely fine.

You may also want to use the 4GB patch (helps with lag/crashing) if you don't already use it. I think the RPC is pre-patched.

If you've used Reshade, that's the only reason I can see how the game would be blurry (not counting AA). Unless you've got the texture detail and sim/object detail on low settings ingame. You'll want to check if anything is set to low, missing, or greyed out in the settings, like with smooth edges (means GR settings likely need some editing still).

You want to find or create a profile for each individual game and configure the settings there. It already comes with profiles for most games, but I think the last EP is not there. Anti-aliasing is very heavy since the resolution is increased, and is too much for heavier games. Some games also impose additional effects with a stencil like buffer, and expect objects to have hard borders. Anti-aliasing can cause a glow around them.

Could it be that the video card is running in a low power mode and the integrated GPU is used? I've heard of this on laptops.

Sorry for the late reply, life was life! The solution was forcing AA (and realizing I could apply sharpening as well) to fix the ugly. The water fix solved the Minecraft-aah Water Problem!
What was causing the lag, you ask? It was indeed Windows screwing me over! Once I tried the desktop thing, that fixed it. I thought I was applying it to the wrong one.

I did have the card set to medium power (Baldur's Gate likes to run wild), essentially, however turning it up or down didn't change anything ): I think the game's too old to care unless is given like 5mb/vram. HOWEVER, that was actually rly helpful because it let me check on some other power settings.

TL;DR You guys saved me! Thanks soooo much!