Well for must cases it is the Ram of the system and the processor I will show you how you can get rid of slow processing
- Run the task manager then try to stop some running programs
- the antivirus sometimes slows the computer due to the processing power it takes.
- I would recommend that all program should be closed from the task manager and close some running apps in the system settings go to start up and then close it now you are good to go.
Charles baggage (picture for more info)
I think the Iphone is better the Google Pixels. That's just my opinion but some people like google pixels better.