davidjharder 
The output is pasted as follows:
System:
  Host: dellpickle Kernel: 6.11.10-310.current arch: x86_64 bits: 64
  Desktop: GNOME v: 47.1 Distro: Solus 4.6 convergence
Machine:
  Type: Laptop System: Dell product: Inspiron 5558 v: 01
    serial: <superuser required>
  Mobo: Dell model: 086DKN v: A00 serial: <superuser required> UEFI: Dell
    v: A14 date: 11/22/2016
Battery:
  ID-1: BAT0 charge: 26.7 Wh (100.0%) condition: 26.7/41.4 Wh (64.5%)
CPU:
  Info: dual core Intel Core i7-5500U [MT MCP] speed (MHz): avg: 1800
    min/max: 500/3000
Graphics:
  Device-1: Intel HD Graphics 5500 driver: i915 v: kernel
  Device-2: NVIDIA GK208BM [GeForce 920M] driver: nouveau v: kernel
  Device-3: Microdia Integrated Webcam HD driver: uvcvideo type: USB
  Display: wayland server: X.Org v: 24.1.4 with: Xwayland v: 24.1.4
    compositor: gnome-shell driver: X: loaded: modesetting,nouveau
    unloaded: fbdev,vesa dri: iris,nouveau gpu: i915 resolution: 1366x76860Hz
  API: OpenGL v: 4.6 compat-v: 4.3 vendor: intel mesa v: 24.2.7
    renderer: Mesa Intel HD Graphics 5500 (BDW GT2)
Network:
  Device-1: Intel Wireless 3160 driver: iwlwifi
  Device-2: Realtek RTL810xE PCI Express Fast Ethernet driver: r8169
Drives:
  Local Storage: total: 931.51 GiB used: 267.08 GiB (28.7%)
Info:
  Memory: total: 8 GiB available: 7.67 GiB used: 1.89 GiB (24.6%)
  Processes: 218 Uptime: 16m Shell: Bash inxi: 3.3.36
Of course the battery is getting older and is down to close to 50% capacity, but would that affect plugged in performance?