If all of these problems were caused by ONE underlying issue, it would already be known and fixed.
If any of the over 200 Posters who posted or clicked the "Me Too" button are actually serious about fixing the issues they are experiencing, you need to start a NEW discussion. This discussion has so many different computers and MacOS and slightly different issues, Readers can not possibly keep things straight to actually solve anything.
Be sure to create a title that will attract readers who can help, and include:
model year and screen size of your MacBook Pro.
Exact version of MacOS.
exactly what symptoms, and when they occur.
and an Etrecheck report:
Download and run this little "discovery" utility, Etrecheck, developed by a software developer for use on the forums. It changes NOTHING.
Etrecheck contains little tests for speeds of devices, CPU utilization, memory usage, energy usage and a digest of recent problems, in one easy to use package. It does not even need to be Installed.
if you follow the directions faithfully, its report (pre-laundered of all personally-identifiable information) can be "Shared" to the system ClipBoard, then Pasted into an Additional text window in a reply on the forums.
How to use Etrecheck Pro for free
http://etrecheck.com