Revit File Size and Lag

[TonyHolsinger]

Found something interesting today. We had a file that would just lag like crazy. Moving pipe, deleting pipe, copying itms, everything would take like 2-3 minutes of lag before it would do anything. We discovered that hundreds (Sometimes thousands) of pipe were still drawn as .itms that were no longer on the templates from changes that were made at some point. I selected all of the similar "outdated" piping, and changed to the current piping from the properties dropdown, and this cut our file size down from over 5gb, to rough 575mb. Seems to be running alot smoother as well. Just thought I'd pass this information along, incase it helps the next person, or to see if anybody else has encountered this issues as well?

[madcad]

Are we saying that parts placed in the model and the ITMs subsequently removed from service but the placed ITMs remain in the model?

Given above once removed is Revit storing all these existing instances as individual cached components? radically increasing file size?

Does any one know of a way of scheduling such components in a model to fix?

I ask specific questions because I am rather excited about this. Our models grow and respond poorly. We always end up removing / swapping content in service due to change.

[Darren Young]

What Revit version Tony?

[TonyHolsinger]

Sorry, I never saw this response. It was 2024, but I'm not sure what version of 24 specifically as we've updated a couple of times since this

[TonyHolsinger]

Are we saying that parts placed in the model and the ITMs subsequently removed from service but the placed ITMs remain in the model?

Given above once removed is Revit storing all these existing instances as individual cached components? radically increasing file size?

Does any one know of a way of scheduling such components in a model to fix?

I ask specific questions because I am rather excited about this. Our models grow and respond poorly. We always end up removing / swapping content in service due to change.

Correct, Say we had Pipe "Type A" on the template, and had a floor drawn out, then it got changed to pipe "Type B" on the template with "Type A" being removed from the template completely. It appears that every pipe that was "Type A" retains it's information individually. In our case, it wasn't noticed at first because Type A to type B was just changing from domestic to import so it was all just steel at the end of the day. We just selected similar for all the "Type A" pipe and used the properties pull down to set it to the "Type B" that was now on the template and everything worked a lot smoother.