Moved from NVIDIA to AMD and lightbaking no longer works

Unity Engine
,
1

Hello,

I bought the AMD 7900XTX to replace my NVIDIA 2080ti and now lightbaking doesnt seem to finish at all.

I created a map with an asset pack, and the NVIDIA card could finish baking in around 10-15 minutes. But my AMD card seems to be in a baking loop and unity editor becomes very unresponsive, I tried to let it run for 4 hours with no luck.

I reinstalled windows completely as well, and just loaded the demo scene of my asset pack (containing a few prefabs, see below). And even that doesn’t seem to be able to finish

Unity 2021.3.22f1
Windows 11

Update: I’m suspicious that it is a Windows 11 problem since bake lighting worked on my linux
Update 2: It also did not work on a fresh Windows 10 install

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2

Can you send a screenshot of the light bake settings?

3

Yea sure. Here it is.

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4

Facing the same problem with my AMD 7900XT on unity 2021.3.23f1. It gets stuck on preparing bake and the estimated time just keeps increasing, after about 6 hrs the timer was at 34hours. Used the same settings as @DavyApple .
Using the CPU lightmapper (AMD Ryzen 9 7950x) doesnt help either, unity acts the same way.

The same scene on my laptop with an Nvidia GTX 1650 generates the lighting in about 5 seconds since it’s not a lighting heavy scene. With CPU (i5-9300HF) it takes about 45-60sec.

I couldnt find any other forum posts about this, so I’m guessing this is a bug that needs to be reported.