GPU load too high

@pffftwtfolololo  Was that 90º C the core temperature, the VRAM, or the hotspot?  The core shouldn't get that hot under full load, and a GPU should also be able to sustain a 95+% load without thermal throttling.  That's what they're designed to do.  It has nothing to do with the game or other application being run.

If you'd like to lower the workload for your GPU, try capping your in-game framerates.  I can help with that if necessary.  Or switch back to DirectX 9 mode—some players say their graphics workloads are significantly higher under DX11.  This isn't a long-term fix but would give you some time to wait for a possible change to how the game runs in DX11 mode.

What I tried to say: Sims 4 ran fine on my PC without any fan noise and since latest patch my PC sounds like a starting jet and it even crashes due to Sims 4.

Bad patch.

patch not only made my PC run hader, but now my game is unplayable because the lag is so bad. No reason for this!  Before the jan update my comp ran sims seamlessly, now it acts like a Windows 95 pc.  Any way to NOT have that update?

Ok, I see the problem. Game runs at 120 - 160 fps at 3440 x 1440. How can I reduce it to something like 100 in windowed fullscreen?

@puzzlezaddict posted a fix for this here some time ago, but it doesn't work in fullscreen windowed mode.

Changing to fullscreen istn't an option, because hell breaks loose when switching in and out of sims 4 in fullcreen mode. EA, please fix this! :-)

@pffftwtfolololo  I'm glad this helped.  I do think it's worth testing in DirectX 9 mode, if for no other reason than to give feedback about DX11 mode being too demanding.  Here's the master feedback thread:

https://answers.ea.com/t5/PC/DirectX-11-Technical-Issues-and-Feedback-Thread/td-p/14022619

But yes, the fps cap you've found should hold in all modes, and if you don't care about losing the extra frames, it's an easy answer.