If you want to try setting up an exception for the MoI process to not be messed with by Sophos, you may need to set it for both the main MoI app and also the additional moi_commandprocessor executable which is located inside the app bundle (right-click and choose "Show package contents" to go into the app bundle) inside moi.app/Contents/Frameworks/moi_commandprocessor . Those are the 2 processes that need to communicate with each other.

If Sophos is intercepting and analyzing named pipe traffic between those 2 processes it could cause a slowdown like you are describing.

- Michael

HI Michael, Thanks for the explanation. I've uninstalled Sophos for now but extrude/offset behaviour still remains laggy. Thanks Larry for confirming its just me. I've tried running Moi with a new user account and I still have the same behaviour. Any other thoughts?

Colin

Updated! I think I have fixed the issue, although the solution was counter-intuitive. Deleting Moi3d v4 from the accessibility list in security seems to have fixed the issue, no more extrusion lag.


Colin

Hi Colin, hmm can you try going into Activity Monitor and then highlight "MoI v4 beta" in the processes list and on the wheel button in the toolbar pick "Sample Process" and maybe try to move the mouse around in an Extrude while it is sampling for the next few seconds and then send the report to me at moi@moi3d.com ?

Also another one is in Activity Montior note the pid for the "MoI v4 beta" process and from a Terminal prompt do:

kill -s SIGSEGV pid_number_here

That should trigger a crash dump to be generated, it may take it a minute or so before it shows up in the finder window that pops up. If you can generate that and also send it to me maybe I will be able to see something in there.

(hadn't seen your newer msg when writing this...)

Thanks, - Michael

That's great Colin, I wonder what side effect that accessibility list has that makes it slower? I'll try to see if I can find out anything about that.

- Michael

I can repeat over here that putting MoI on the "Security & Privacy" > Privacy > Accessibility > "Allow the apps below to control your computer." list causes lag.

I'll poke around a bit to see if I can figure out why - maybe it's a slowdown in spawning a worker process moreso than inter-process communication. But also I don't think that it is needed to grant MoI special permissions like that anyway though.

- Michael

Hi Colin, also do you happen to remember why Moi got added into that list? Does the OS tell you to put it there if you try to save into certain folders or something like that?

- Michael

Hi Michael, I'm sorry I don't recall adding it, but I doubt I would have added it without being prompted to do so. Moi3d V3 is also on that list as well.

Colin