Change Nmap Options
Don't mess here if you don't really know what are you doing.
Scans 
Polite
-A -p1-65535
Normal
-A -r -PA445,22 -PS445,22 -PE -p1-65535
Aggressive
-A -r -PA445,22 -PS445,22 -PE -p1-65535 --max_rtt_timeout 100 --min_rtt_timeout 10 --host_timeout 900000 --initial_rtt_timeout 50 --max_scan_delay 5
Custom Scan 2 
-sP
Custom Scan
-A -r -PA445,22 -PS445,22 -PE --max_rtt_timeout 100 --min_rtt_timeout 10 --host_timeout 900000 --initial_rtt_timeout 50 --max_scan_delay 10
Sweeps
Polite
-sP
Normal
-sP -T5
Aggressive
-sP --min_parallelism 100 --max_rtt_timeout 100 --min_rtt_timeout 10 --initial_rtt_timeout 50
Custom sweep
-sP -PA445,22 -PS445,22 -PE --min_parallelism 100 --max_rtt_timeout 100 --min_rtt_timeout 10 --initial_rtt_timeout 50