change the drc choices in the drc manager
T-D , click 'rules to check in the left pane.
you get a grid. in the column 'online' disable all but short circuit , clearance , net antennae
in your project settings : C - O under class generation : turn off rooms if you don;t use those.
in the design rules D-R disable all but clearnace,planeconnect,polygonconnect,unroutednet and width.
your machine should now blast through the online checker. the other stuff you really dont need during active layout. ( unless oyu are doing controlled impedance , bga fanout etc )
those can be run in the batch processor as part of the release