g'day and welcome to the forums.
let’s get your complete PC specs.
get Speccy from here;
https://www.piriform.com/speccy/builds
in Speccy, click File > Publish Snapshot (hit Yes if prompted to proceed with publish) > Copy to Clipboard > Close.
now you can paste (Ctrl+V) that link into your next post.
one component Speccy doesn’t cover is the Power Supply Unit, so also include the make/model of the PSU.
while we wait for that, try these from an elevated command prompt;
- chkdsk c: /r
- sfc /scannow
- dism /online /cleanup-image /restorehealth
- dism /online /cleanup-image /startcomponentcleanup /resetbase
and let's get the maintenance housekeeping out of the way as well;
• reboot modem/router/pc
• delete restore points
• turn off hibernation (powercfg -h off)
• empty web browser cache
• delete system temp files
• disable unwanted scheduled tasks
• disable unnecessary startup services
• disable scheduled defragging
• TRIM any SSD's
• turn off Timeline and Activity History, and all things Microsoft Telemetry based
• empty recycle bin
• delete log files and error reports
• remove old Windows Updates files
• cleanup software installer and distribution caches
• delete unwanted programs
• remove any browser extensions
• if connecting via wireless, try ethernet
• pause any online cloud storage synchronising (OneDrive, DropBox)
CCleaner (free version) or Glary Disk Cleaner or the inbuilt cleanmgr command can do most of those points.
ShutUp10 by O&O Software can stop a lot of telemetry items.
other things to try;
• create another user account and login under that profile
• check for firmware updates for modem/router
do a web speed check - go to
www.speedtest.net and post the results.