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jeff6666p

macrumors member
Original poster
Jun 2, 2012
55
3
I notice my MacBook Pro 15" 2015 running hotter and YouTube is laggy now spiking 100% cpu at times
 

NewUsername

macrumors 6502a
Aug 20, 2019
587
1,319
Did you upgrade or install as new? If the former, consider setting up as new and see how that works for you. I haven’t had that kind of problem and I upgraded.
I just updated to Big Sur the normal way but ran into some issues, what I usually do for a clean install is to use Internet Recovery (Option-Command-R). Strangely, when I open Internet Recovery it refers me back to Catalina. Is that normal? Since this doesn't work (it doesn't allow me to reformat the main drive) I used the regular Recovery mode instead.
 

Apple_Robert

Contributor
Sep 21, 2012
35,576
52,315
In a van down by the river
I just updated to Big Sur the normal way but ran into some issues, what I usually do for a clean install is to use Internet Recovery (Option-Command-R). Strangely, when I open Internet Recovery it refers me back to Catalina. Is that normal? Since this doesn't work (it doesn't allow me to reformat the main drive) I used the regular Recovery mode instead.
Someone can correct me if I am wrong here but, I believe the recovery partition only changes to Big Sur with a fresh install.
 
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jeff6666p

macrumors member
Original poster
Jun 2, 2012
55
3
I rebooted while waiting for a reply and it seems much better. running 20c cooler but YouTube still lags abit while scrolling through the comments
 

Areyouwinningson?

macrumors newbie
Nov 12, 2020
16
12
I rebooted while waiting for a reply and it seems much better. running 20c cooler but YouTube still lags abit while scrolling through the comments
Thats all well and good then. If you want to clean install, then backup your data and then go to recovery mode and from disk utility format the MacHD group volume and then clean install from there(You will require a stable internet connection for this)
 

jeff6666p

macrumors member
Original poster
Jun 2, 2012
55
3
Thats all well and good then. If you want to clean install, then backup your data and then go to recovery mode and from disk utility format the MacHD group volume and then clean install from there(You will require a stable internet connection for this)
Thanks man!
 
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