[BUG] surprised by low util vs cpu graph

**Describe the bug**

bashtop reports dramatically different cpu usage to top. cpu graph shows 100% util while no process exceeds eg 4%, meanwhile top shows one process using ~97%.

**To Reproduce**

arch 64 intel. open bashtop, open top. (seems either brave browser or a tab I had open was doing something nasty)

**Expected behavior**

bashtop should indicate which process is hogging cpu so it can be killed. it would seem logical this applies in tree view also.

**Screenshots**

pc was unresponsive, could not provide.

**Info (please complete the following information):**
- Bashtop version: 0.9.25
- (Linux) Linux distribution and version: Arch Linux x86_64
- (Linux) Data collection type (/proc or psutil): psutil
- Psutil version: `python3 -c "import psutil; print(psutil.version_info)"` (version 5.7.0 or above is required): (5, 9, 7)
- (OSX/FreeBSD) Os release version:
- Terminal used:xfce4
- Font used:Monospace Regular
- Bash version, `bash --version` (version 4.4 or above is required): 5.2.21(1)-release (x86_64-pc-linux-gnu)
- Locales: output of `locale -v`:
LANG=en_AU.UTF-8
LC_CTYPE="en_AU.UTF-8"
LC_NUMERIC="en_AU.UTF-8"
LC_TIME="en_AU.UTF-8"
LC_COLLATE="en_AU.UTF-8"
LC_MONETARY="en_AU.UTF-8"
LC_MESSAGES="en_AU.UTF-8"
LC_PAPER="en_AU.UTF-8"
LC_NAME="en_AU.UTF-8"
LC_ADDRESS="en_AU.UTF-8"
LC_TELEPHONE="en_AU.UTF-8"
LC_MEASUREMENT="en_AU.UTF-8"
LC_IDENTIFICATION="en_AU.UTF-8"
LC_ALL=

**Additional context**

contents of `$HOME/.config/bashtop/error.log`

(enable error-logging in "$HOME/.config/bashtop/bashtop.cfg" if missing)

New instance of bashtop version: 0.9.25 Pid: 89054

New instance of bashtop version: 0.9.25 Pid: 4169
/usr/bin/bashtop: line 2411: /proc/499754/stat: No such file or directory
/usr/bin/bashtop: line 2411: /proc/2734717/stat: No such file or directory

New instance of bashtop version: 0.9.25 Pid: 5061
/usr/bin/bashtop: line 1337: ((: Pid: Program: Arguments: Threads: User: Mem% Cpu%: syntax error in expression (error token is ": Program: Arguments: >
/usr/bin/bashtop: line 1347: ((: Pid: Program: Arguments: Threads: User: Mem% Cpu%: syntax error in expression (error token is ": Program: Arguments: >
/usr/bin/bashtop: line 1353: ((: Pid: Program: Arguments: Threads: User: Mem% Cpu%: syntax error in expression (error token is ": Program: Arguments: >
/usr/bin/bashtop: line 1334: ((: Pid: Program: Arguments: Threads: User: Mem% Cpu%: syntax error in expression (error token is ": Program: Arguments: >
/usr/bin/bashtop: line 1353: ((: Pid: Program: Arguments: Threads: User: Mem% Cpu%: syntax error in expression (error token is ": Program: Arguments: >
/usr/bin/bashtop: line 1334: ((: Pid: Program: Arguments: Threads: User: Mem% Cpu%: syntax error in expression (error token is ": Program: Arguments: >
/usr/bin/bashtop: line 3037: Pid: Program: Arguments: Threads: User: Mem% Cpu%: syntax error in expression (error token is ": Program: Arguments: >

New instance of bashtop version: 0.9.25 Pid: 6654

New instance of bashtop version: 0.9.25 Pid: 4846

New instance of bashtop version: 0.9.25 Pid: 2991

New instance of bashtop version: 0.9.25 Pid: 2100
/usr/bin/bashtop: line 1334: ((: Pid: Program: Arguments: Threads: User: Mem% Cpu%: syntax error in expression (error token is ": Program: Arguments: >
/usr/bin/bashtop: line 1334: ((: Pid: Program: Arguments: Threads: User: Mem% Cpu%: syntax error in expression (error token is ": Program: Arguments: >
/usr/bin/bashtop: line 1465: ((: /opt/brave-bin/brave: syntax error: operand expected (error token is "/opt/brave-bin/brave")
/usr/bin/bashtop: line 1466: ((: /opt/brave-bin/brave: syntax error: operand expected (error token is "/opt/brave-bin/brave")
/usr/bin/bashtop: line 1468: /: syntax error: operand expected (error token is "/")

New instance of bashtop version: 0.9.25 Pid: 2143
/usr/bin/bashtop: line 1334: ((: Pid: Program: Arguments: Threads: User: Mem% Cpu%: syntax error in expression (error token is ": Program: Arguments: >
/usr/bin/bashtop: line 1334: ((: Pid: Program: Arguments: Threads: User: Mem% Cpu%: syntax error in expression (error token is ": Program: Arguments: >
/usr/bin/bashtop: line 1465: ((: hl2.exe: syntax error: invalid arithmetic operator (error token is ".exe")
/usr/bin/bashtop: line 1466: ((: hl2.exe: syntax error: invalid arithmetic operator (error token is ".exe")
/usr/bin/bashtop: line 1465: ((: Z:\\mnt\\iscsi\\SteamLibrary\\steamapps\\common\\Team: syntax error in expression (error token is ":\\mnt\\iscsi\\SteamLibrary\\steamapps\\common\\Team")
/usr/bin/bashtop: line 1466: ((: Z:\\mnt\\iscsi\\SteamLibrary\\steamapps\\common\\Team: syntax error in expression (error token is ":\\mnt\\iscsi\\SteamLibrary\\steamapps\\common\\Team")
/usr/bin/bashtop: line 1465: ((: 2\\hl2.exe: syntax error: invalid arithmetic operator (error token is "\\hl2.exe")
/usr/bin/bashtop: line 1466: ((: 2\\hl2.exe: syntax error: invalid arithmetic operator (error token is "\\hl2.exe")
/usr/bin/bashtop: line 3037: Pid: Program: Arguments: Threads: User: Mem% Cpu%: syntax error in expression (error token is ": Program: Arguments: >

New instance of bashtop version: 0.9.25 Pid: 218532

New instance of bashtop version: 0.9.25 Pid: 2068
PSUTIL ERROR! Command: get_net('wlan0')
'wlan0'
07:38:52 ERROR: On line 4634
PSUTIL ERROR! Command: get_net('wlan0')
'wlan0'
09:53:02 ERROR: On line 4634 (MUTED!)

New instance of bashtop version: 0.9.25 Pid: 29778
PSUTIL ERROR! Command: get_net('wlan0')
'wlan0'
11:30:40 ERROR: On line 4634
PSUTIL ERROR! Command: get_net('wlan0')

'wlan0'
11:30:40 ERROR: On line 4634 (MUTED!)

New instance of bashtop version: 0.9.25 Pid: 662694

New instance of bashtop version: 0.9.25 Pid: 663680

New instance of bashtop version: 0.9.25 Pid: 663680

New instance of bashtop version: 0.9.25 Pid: 665526