Manor Lords seems surprisingly stable for an early access game, and the developer says: '99% crashes so far are old drivers'

pcgamer.com:

The game of the moment? The medieval city builder, Manor Lords, of course. The game burst into early access over the weekend and has so far sold over one million copies on Steam. Moreover, it reached a high point for strategy games at over 170,000 players playing at once. With figures like that, for a game in early access, I've come to expect reports of performance issues. Yet there have been surprisingly few. Of those, the developer says, most ending up in a system crash are the result of outdated drivers.

«99% crashes so far are old drivers. And when people say 'I updated the drivers', I check logs and see old drivers,» the Manor Lords official account says on X.

All three GPU manufacturers have released driver packages with optimisations for Manor Lords:

Nvidia, AMD, nor Intel list any specific performance increases in Manor Lords with the latest driver packages, but that's no reason not to upgrade. If your drivers are any older than those listed above, you'd best update for the smoothest experience. 

Though there are other causes for crashes in Manor Lords, as noted by the developer. That 99% phrasing is surely hyperbole, then. The developer also notes AMD's upscaling technology FSR (FidelityFX Super Resolution) being enabled for those with older GPUs may cause issues. FSR is currently enabled by default, and you can disable it from the game's settings menu. But if you can't even get that far, the second best way to disable it is by tweaking the Settings.ini file located in the game's folder in AppData, which is located in your user folder.

C:\Users\[Username]\AppData\Local\ManorLords\Saved\Config\WindowsNoEditor

Open that file with a text editor, even the Notepad app will do, and remove the line in there to prevent FSR being used on game boot.

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This issue will reportedly receive a fix with a future update.

FSR should be a boon to performance, as an upscaling