How do I get ShadowPlay to record more than 20 minutes?

Extend record time in Shadowplay Tutorial

1. Turn off Shadowplay.
2. Open Regedit and go to HKEY_CURRENT_USERSoftwareNVIDIA CorporationGlobalShadowPlayNVSPCAPS. Look for the Dvalue DVRBufferLEN. It should have ## ## 00 00. …
3. Restart PC.
4. Turn On Shadowplay Again, now you have your desire time.