WindowServer draining battery on 2020 Macbook Pro

<< WindowServer is constantly running at 100-110% of CPU even if all of my apps are closed. >>

As long as there is still some RAM available, closing an Application does NOT make it quit. It will continue to do what it does, even without an open Window. If you want to save battery you need to get in the habit of saying QUIT, not just closing the last window.

You have a remarkably large CPU usage, and FireFox is open and using WindowServer resources.

You also have installed OneDrive, and have it set to run at all times. When you do this, it scans your files NON-STOP AND scan your files on the shared Drive NON-STOP consuming your computer's resources because it is ported form Windows, and dies not consult the MacOS data structures that could tell it instantly what folders had been modified.

You need to start up your Time machine backups real soon. its been over ten days, according to your report. Time machine does its work at low priority in the background, so you can continue to do your important work.

You have Windscribe VPN installed, and it's components have crashed daily for several days running.

Readers assume a VPN will protect them and keep them safer. Instead, this stuff punishes performance and slows down your Mac and makes it unstable, while compromising your security.

Unless you use this to connect to your employer or school, you should not be running a VPN. It's completely unnecessary and it's snake-oil.

That computer is a battery-CAPABLE device. It is not optimized as a battery-operated device. (It is NOT an iPhone.)

Your computer performs best when connected to AC power. It can use the full output of the Power Adapter AND when doing especially challenging work will also freely "borrow" power from the battery. In some cases, even with the power adapter connected, the charged state may even decline during stressful work.

When used only on battery, your computer has no extra cushion of power, and will perform more slowly. However, for ordinary non-stressful tasks this may not be objectionable (possibly not even noticeable.)

Your MacBook Pro uses smart charging to charge in the optimum way, and only when necessary. Plugged in is Not necessarily actively charging. There is substantial hardware and software cooperating on battery and charging issues.

In general, you should ALWAYS connect AC power when it is possible to do so, and only run on batteries (which will be somewhat slower) when no AC sources are at hand. Your Mac will NEVER over-charge.

These are your crash reports:

Diagnostics Information (past 7-30 days):

2021-12-19 06:49:14 WindowServer High CPU Use

Executable: /System/Library/PrivateFrameworks/SkyLight.framework/Versions/A/Resources/WindowServer

2021-12-18 00:45:10 /Library/Logs/DiagnosticReports/ProxiedDevice-Bridge/log-aggregated-2021-12-18-004510.ips Crash

2021-12-17 00:00:49 /Library/Logs/DiagnosticReports/ProxiedDevice-Bridge/log-aggregated-2021-12-17-000049.ips Crash

2021-12-16 00:00:47 /Library/Logs/DiagnosticReports/ProxiedDevice-Bridge/log-aggregated-2021-12-16-000047.ips Crash

2021-12-15 00:29:44 /Library/Logs/DiagnosticReports/ProxiedDevice-Bridge/log-aggregated-2021-12-15-002944.ips Crash

2021-12-14 00:31:41 /Library/Logs/DiagnosticReports/ProxiedDevice-Bridge/log-aggregated-2021-12-14-003141.ips Crash

But I saw OneDrive mentioned several different times...

... and I am not correct. You have OneDrive Updater running, but not OneDrive itself.

What version of Windows Server and how many services are you delegating from it? are you virtualizing multiple instances? Are you virtualizing at all? are you using bootcamp? if so does it behave the same way?

Is this a staging test setup or is it deployed in an office, if so, whats the size of the group it's serving?