"My general guidelines for driver updates:
   Do it if there's a hot new game that just came out that will likely get performance gains(generally only pertains to new AAA releases.)
   Do it as a troubleshooting method, so instead of reinstalling your old drivers you might as well update to the latest.
   Do it if it's been about 6-12 months, generally issues or new releases arise before this though so reinstalling happens before this window anyways nullifying this bullet point."