Thank you for making the Etrecheck Report available 😀
From the Supplied Report, I see nothing to account for this computer behaviour
EtreCheckPro version: 6.6.1 (66021)
Report generated: 2022-07-11 14:44:38
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Runtime: 3:00
Performance: Excellent
Problem: Computer is restarting
Major Issues:
Anything that appears on this list needs immediate attention.
Q - No Time Machine backup - Time Machine backup not found.
A - Anything that cannot be replaced is worth protecting. As it stands now, this indicates everything is dispensable.
Time Machine Backup is very useful and can be used to Revert to Previous Working macOS
Minor Issues:
Q - Unsigned files - There are unsigned software files installed. These files could be old, incompatible, and cause problems. They should be reviewed.
A - Self explanatory and worth considering updating / upgrading or replacing to make more Big Sur Compatible.
Q - Runaway user process - A user process is using a large percentage of your CPU.
A - This could be related to above and or user choices of usage ie Multi Applications running all that the same time. Some of which are not really needed.
Q - Vintage hardware - This computer may be considered vintage.
A - An 8 year old Computer running the last version of macOS it Qualifies to run. Big Sur would perform better on a newer machine as Technology has changed by light-years since 2014.
Hardware Information:
MacBook Pro (Retina, 15-inch, Mid 2014) - Vintage!
MacBook Pro Model: MacBookPro11,2
2.2 GHz Quad-Core Intel Core i7 (i7-4770HQ) CPU: 4-core
16 GB RAM - Not upgradeable
BANK 0/DIMM0 - 8 GB DDR3 1600
BANK 1/DIMM0 - 8 GB DDR3 1600
Battery: Health = Normal - Cycle count = 219
Video Information:
Intel Iris Pro - VRAM: 1536 MB
Color LCD (built-in) 2880 x 1800
Drives:
Q - disk0 - APPLE SSD SM0256F 251.00 GB (Solid State - TRIM: Yes)
A - Again, 8 year old machine with 8 year old SSD - drive do have have limited Write / Re-write limits at which time they will slow down
System Software:
macOS Big Sur 11.6.7 (20G630)
Time since boot: Less than an hour
User Launch Agents:
Q - [Loaded] com.google.keystone.agent.plist (Google LLC - installed 2022-07-11)
Q - [Loaded] com.google.keystone.xpcservice.plist (Google LLC - installed 2022-07-11)
A - Google Chrome is known to be a Memory and Resource Hog. Alternative might be www.brave.com only without the Google OverHead baggage.