Slow graphical ROOT interface with MacBook Pro Catalina

ROOT
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1

Dear rooters,

I have a new MacBook Pro 16", running Catalina and it has a decent external graphics card.
I installed Xcode, and then ROOT using home-brew and it works without problems.
However, I am experiencing lags in the graphical interface of ROOT. When I maximise a window or edit something inside a canvas, it besoms rather slow. They windows behave as if the RAM is full…
I am not experiencing the same issue with other programs or apps. Just in ROOT.

Did anyone have the same problem?
Thanks in advance
Best regards

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ROOT Version: 6.20/04
Platform: MacBook Pro 16"
Compiler: brew

2

Even with an empty canvas?

3

Yes, in fact with an empty canvas also.

4

Can you monitor the memory usage and CPU on your Mac while using ROOT (I doubt it is the cause of the issue though)

5

I checked it, and it looks normal. The CPU is ranging between 0 and 5 % depending on what I do. The RAM usage is around 130 MB when I have TBrowser open but with an empty canvas.

6

Then it’s hard to tell what could be the issue… Let’s see if someone with a Mac ever had this issue. @couet, @Axel any idea what could be the issue or what to check on Mac?

7

I opened a TBrowser with an empty canvas on my macbook and I do not see any particular problem regarding speed when maximising the TBrowser window. I am using ROOT master version on Catalina 10.15.5 with a late 2013 MacBook pro, with 8GB of RAM.

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