Screensaver Interrupting Minecraft

[PawLurk]

My screensaver is engaging as if the system is idle when I have Minecraft loaded.

I've played about with the power saver settings, and it doesn't seem to be related to that. I'd rather not turn off my screensaver altogether.

 

[Fouchey]

That's strange, never happened to me.
Just turn it off before you play and back on when you're done?

 

[PawLurk]

That's strange, never happened to me.
Just turn it off before you play and back on when you're done?

Ach, just seems fiddly to be turning it On/Off all the time.

I'm sure it's something obvious I'm overlooking, seeing as Googling the problem doesn't seem to bring up similar stories.