[CURRENT ISSUE 64-bit] red flashing game window

Hi all -

I've been playing and enjoying the Sims 3 64 Bit and am new to posting on the forums - woo!  Wanted to see if anyone has come across a graphics glitch that happens when I play families with large, multi-floor households (e.g. Goth and Landgraab household).  Whenever I move around and zoom out to get to a different room, the lot goes to a solid red color and I cannot see anything.  When I zoom back in, it'll fix itself but it's annoying because it's caused my game to crash a few times.  I'm running all of my graphics on their highest setting and own a 2020 MacBook Pro.  Would appreciate any insights or help!

I saw a red pulsing screen when going up one floor level, and the screen disappeared when I went back down.  This repeated over and over with the game paused in that moment but did not recur a few minutes later, after I'd run the game clock for a bit.  The game did not crash then or for the rest of the play session, about half an hour.

The affected house was the Ichtaca castle in Isla Paradiso, which has significant terrain changes (and some questionable build decisions), and I was moving the camera to the third floor from the second.

I experienced a red flash, no more than second when increasing the resolution in full screen mode. It has only occurred once and I have changed the resolution multiple times in both full screen and windowed mode since. It occurred again when zooming out on a large lot in Sunset Valley. 

I found that setting my "Texture Detail" under Options to the lowest possible setting fixed the red screen issue when I scrolled out from my lot.  It also seemed exclusive to large lots; I tested a few in Sunset Valley and found it was only hitting Landgraab, Alto, and Goth. 

I had the flashing red screen when I was putting a house in a lot and also when I switched floors. 

@jampreilly @realfabiomello @Hephaestion02 and anyone else affected, has this happened on flat lots, or only on lots with some terrain variation?  I'm just curious.  If you're not sure, you can list the lot(s) where you saw this, and the worlds too for those of us who don't know all the premades in every world.

Hi, this happened yesterday for me and I've since uninstalled and am reinstalling without Pets so I'm not sure my DeviceConfig file would help, (I've added it anyway from my backups).

I experienced it in Isla Paradiso when trying to place a lot replacing Hobart's Hideaway. It zoomed in automatically which started the red screen and as I was zooming out the red screen flashed 3 or 4 times until I was fully zoomed out. I placed the lot but then my game crashed a few minutes later because of pets in the household which is a separate issue. 

I, too, am having the red flashing issue sporadically.  Additionally, I am seeing red elements on buildings and items (please see screenshot), which may be related.  Reinstalling the game and/or repairing the game are not working as solutions for me.  I have also tried adjusting the graphical settings in various ways.  Please see device information below.

Name: Sims3
Version:
Build: Release
=== Rating info ===
GPU: 5 GPU Memory: 5 CPU: 4 RAM: 5 CPU Speed: 2300 Threading: 3
Adjusted CPU: 3910 RAM: 16384 Adjusted RAM: 15872 Cores: 8
Card Found in DB: 1
=== Machine info ===
OS version: Mac OS X Version 10.15.7 (Build 19H2)
OS prod type: 0
OS major ver: 10
OS minor ver: 15
OS SP major ver: 0
OS SP minor ver: 0
OS is 64Bit: 1
CPU: MacBookPro16,1
Brand: Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
Family: 8
Model: 7
Cores: 8
HT: 1
x64: 1
Memory: 16384MB
Free memory: 3809MB
=== Graphics device info ===
Number: 0
Name (driver): AMD Radeon Pro 5500M
Name (database): AMD Radeon Pro 5500M [Found: 1, Matched: 1]
Vendor: ATI
Chipset: Vendor: 1002, Device: 7340, Board: 0000020f, Chipset: 0040
Driver: macOS Metal driver, Version: 0.0.0.0
Driver version: 0
Monitor: 00000000
Texture memory: 4080MB
Vertex program: 3.0
Pixel program: 3.0
Hardware TnL: 0