Schedules slowing down MEP - Combined Parameters?

Schedules slowing down MEP - Combined Parameters?

donnia.tabor-hanson
Collaborator Collaborator
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Message 1 of 25

Schedules slowing down MEP - Combined Parameters?

donnia.tabor-hanson
Collaborator
Collaborator

We have been having problems with our MEP projects and we think we have narrowed it down.

Combining parameters allow things like Door Size to show 84x36 in one column. MEP uses a lot of these such as Voltage/Phase or Voltage/Phase/HP.

Apparently, when you combine parameters in schedules it can slow things way down. The work has slowed steadily with each version as we have upgraded.

Our schedules worked perfectly in 2019 and 2020. Starting in 2021 we noticed things slowing down. Using 2022 and 2023 seems to be even slower. It takes a long time to complete these processes if we need to draw something that will be in one of the schedules with combined parameters. It does not matter if the schedule has been opened or not, just the presence of the combined parameters drags our system down. It does seem to be worse with Shared Parameters, but that is what we use all the time.

The word I am getting from a reseller I have consulted with is that we need to not use all these combined parameters, that used to work and don’t now. This, my team, feels is unacceptable, to say the least.

I need to know if others are experiencing this. Does anyone have a workaround? Do we really have to change the way we have worked because of something that had changed in the software? Can we expect to get this fixed?

Thanks y'all,

Donnia Tabor
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CADMama and Revit Family Counselor
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Message 21 of 25

donnia.tabor-hanson
Collaborator
Collaborator

So when connecting them, adding them, and then moving them you are not seeing a slow down?

Thanks y'all,

Donnia Tabor
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Message 22 of 25

drewj
Enthusiast
Enthusiast

Thats my findings, do you have a file or 2 that shows a difference, where the only difference is the lack of combined parameters?

 

Testing202308020857.gif

Have you tried removing the combined parameters, just to test? does this fix the performance issues in your project?

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Message 23 of 25

RLY_15
Advisor
Advisor

@donnia.tabor-hanson wrote:

Can you do a test with pipes and duct work? Those are the ones with major issues.


What is the system quantity and elements per system in your typical projects? I'm wondering if this is just individual elements updating and causing a recalculation of large system networks. At which point it isn't the number or types of parameters, but rather the calculation volume.

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Message 24 of 25

curtisridenour
Advisor
Advisor

this seems like a very similar issue someone was having with a very extensive formula based family.

 

https://forums.autodesk.com/t5/revit-architecture-forum/revit-2022-performance-more-then-10-times-sl...

 

have you tried it in Revit 2024? Some have said it might have fixed this specific issue.

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Message 25 of 25

cdejesushmaie
Explorer
Explorer

are you filtering by sheet? as when i switched my filter by sheet of my project went back to normal

 

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