I have High Sierra, It's safe upgrading to Mojave if you have nVidia Video?

Hi, I have been recently installed High Sierra 10.3.4 on my PC and works perfectly. But it's safe upgrading to Mojave from App Store? I've read that nVidia Drivers are not working well. Or we have to do something?

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Or it's safe upgrading a OS from App Store? I have 10.3.4 and it's available the version 10.3.6.??

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Thanks a lot.

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