At which time did you download?

Which Swiss revision?

You can try your luck with setting AVE Compatibility to AVE N-DOL. This will output NTSC 50 instead of quasi-PAL-N.
Otherwise, you need to use component video.

It is working, just not as you're expecting. This is a current limitation with PAL games.

Yes, it only affect the IPL animations.

I haven't come up with a 50/60Hz speed fix yet.

That's a legit diagram from the leaks.

We're currently unable to patch Star Wars Rogue Squadron III: Rebel Strike as the relevant function is in an unknown compressed blob.

Ah, I guess you aren't familiar with Games Done Quick or other speedrunning events.

"Greetings from Germany! Long time viewer, first time donator here."

Either use the exit to menu option (last on bottom right), or enable boot through IPL, boot a game, and hold the A button.

The following happen by default as of r963: Work around a nasty hardware bug that causes the CPU to lockup. Typically encountered in Super Mario Sunshine when the sun is in view. Work around some GCVideo bugs and limitations. Fix game and SDK bugs (none gameplay related). Fix some Japanese text rend...

If you have a problem with what Swiss is doing, don't use Swiss. It is also naive to think the default settings change nothing.

Usually it would be the SD card, but I got a whole bunch of different SD card brands and got nothing.

Perfect. Try forcing 240p then and see if it survives.

Try any of these games that say "Requires an SD Card Adapter (if resetting).", do the same, and try resetting.
https://www.gc-forever.com/wiki/index.php?title=Swiss/Forced_Progressive_Compatibility_List#NTSC-U_game_list

Alternatively, try enabling boot through IPL and doing the same.

A debugger. It's largely only relevant for PAL.

It couldn't before, while it was necessary.

This is an isolated case.

Yes, the standard edition maxes out the GPU.

I don't have any custom fan installed. It is a 2-pin JST connector.

They are not. See the compatibility list.

There are 2 revisions of the stock fan, the latter of which is much quieter.

Where did you get 35 dB from? The specifications say 19 dB.

576p is rarely optimal. See the internal resolution of most games on the compatibility list.