Update POWERSAVING.md - fix suspend script

POWERSAVING.md

@@ -17,7 +17,7 @@ If the GPU is powered off during suspend, the system will hang. This can be solv
 
 if [ "${1}" == "pre" ]; then
 	sudo sh -c 'echo "\\_SB.PCI0.GPP0.PG00._ON" > /proc/acpi/call'
-    sleep 1 # The GPU needs a bit of time to ensure that it's on before suspend
+    sleep 2 # The GPU needs a bit of time to ensure that it's on before suspend
 elif [ "${1}" == "post" ]; then
 	if xrandr --listproviders | grep NVIDIA; then
 	    echo "GPU is in use for PRIME, keeping on"