I'd recommend opening Activity Monitor and watch how it's coping RAM-wise. My MBA got a lot slower with Sierra/High Sierra and I had a lot of beachball. It's actually better with Mojave (and I think you can run that with Mojave Patcher, at your own risk!). But keep an eye on when RAM gets into the 'red zone' (ie it's really maxed out). Even having an SSD doesn't seem to offset this completely. Keep RAM usage lower and it should be ok.

But I also find that plugging/unplugging the monitor is a huge hit for the machine (if i put the lid down and go off with my laptop while it's still connected to a screen, it often crashes hard).

The good news is that if it's similar, quitting apps means it runs smoothly. It's just like the days of OS 7;)

good luck
Cheers
J

On 1 Feb 2019, at 12:01, mac98aop wrote:

Hmm, might have solved it!?

I was running an old but preferred version of Pages (which I didn't think would load at all once I updated) and it seems my Mac was struggling to
welcome it aboard High Sierra. I could use it fine, but all was slow.

Have Quit that app and working on same project in new version, whole system
is far far happier.

Will keep you posted, albeit any other ideas or thoughts welcomed!

Have a great weekend everyone.

Adam

On Friday, February 1, 2019 at 10:51:53 AM UTC, mac98aop wrote:

Happy snow day!

Hope you're all safe and well.

Last week I updated my MBPro Early 2011 (SSD) to High Sierra as 3rd party software was demanding it. I feared the worst but it performs brilliantly
on the old workhorse.

But, there is one strange exception... the minute I plug it in to an
external display (whether the lid is closed or open) there is a significant performance lag, lots of spinning beach ball, apps struggling and crashing.

Any tips? Does it really ask that much more of the processor to send to a
2nd screen (again, even with the lid down?)

Can't easily continue like this, it really is troublesome and really do
need the larger screen when at my desk.

Thanks folks - any ideas always appreciated.

Adam


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