i start exactly your command below result
top - 01:08:05 up 2 days, 7:24, 1 user, load average: 2.51, 2.21, 1.25
Tasks: 98 total, 2 running, 96 sleeping, 0 stopped, 0 zombie
%Cpu(s): 1.0 us, 1.2 sy, 0.0 ni, 97.7 id, 0.1 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 4030140 total, 684576 used, 3345564 free, 166712 buffers
KiB Swap: 1239036 total, 0 used, 1239036 free, 316932 cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
23635 root 20 0 23196 1312 840 R 57.6 0.0 6:37.16 screen
23636 root 20 0 33400 4868 1448 S 51.9 0.1 5:23.51 airodump-ng
21710 root 20 0 0 0 0 S 40.3 0.0 1:46.61 kworker/1:2
23644 root 20 0 22160 604 200 S 5.8 0.0 0:18.28 airodump-ng
25510 root 20 0 23104 1416 1084 R 5.8 0.0 0:00.02 top