Websites loading intermittently or not at all

I tried $ top

top - 15:40:25 up 11 days, 3:37, 1 user, load average: 0.29, 0.11, 0.08 Tasks: 117 total, 1 running, 116 sleeping, 0 stopped, 0 zombie %Cpu(s): 0.7 us, 0.3 sy, 0.0 ni, 99.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem : 1883712 total, 371892 free, 404140 used, 1107680 buff/cache KiB Swap: 2097148 total, 2079932 free, 17216 used. 1160824 avail Mem

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3746 root 20 0 151152 5180 3872 S 0.3 0.3 0:00.01 sshd
1 root 20 0 127244 3448 2304 S 0.0 0.2 0:26.63 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:00.02 kthreadd
3 root 20 0 0 0 0 S 0.0 0.0 0:08.04 ksoftirqd/0
7 root rt 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
8 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcu_bh
9 root 20 0 0 0 0 S 0.0 0.0 0:42.53 rcu_sched
10 root rt 0 0 0 0 S 0.0 0.0 0:02.57 watchdog/0
12 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kdevtmpfs
13 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 netns
14 root 20 0 0 0 0 S 0.0 0.0 0:00.15 khungtaskd
15 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 writeback
16 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kintegrityd
17 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
18 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kblockd
19 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 md
22 root 20 0 0 0 0 S 0.0 0.0 0:00.25 kswapd0
23 root 25 5 0 0 0 S 0.0 0.0 0:00.00 ksmd
24 root 39 19 0 0 0 S 0.0 0.0 0:01.54 khugepaged
25 root 20 0 0 0 0 S 0.0 0.0 0:00.00 fsnotify_mark
26 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 crypto
34 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kthrotld
35 root 20 0 0 0 0 S 0.0 0.0 0:05.78 kworker/u2:1
36 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kmpath_rdacd
37 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kpsmoused
38 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 ipv6_addrconf
57 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 deferwq
89 root 20 0 0 0 0 S 0.0 0.0 0:02.10 kauditd
261 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 ata_sff
277 root 20 0 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_0
279 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 scsi_tmf_0
280 root 20 0 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_1
281 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 scsi_tmf_1
283 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 ttm_swap
353 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kdmflush
354 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
364 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kdmflush
365 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
379 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 xfsalloc
380 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 xfs_mru_cache
[root@ns1 ~]# suexec -V -D AP_DOC_ROOT="/home" -D AP_GID_MIN=100 -D AP_HTTPD_USER="apache" -D AP_LOG_SYSLOG -D AP_SAFE_PATH="/usr/local/bin:/usr/bin:/bin" -D AP_UID_MIN=500 -D AP_USERDIR_SUFFIX="public_html"