# Build changed only?
**URL:** https://qa.fmod.com/t/build-changed-only/15158
**Category:** FMOD Studio
**Created:** [October 23, 2019, 4:57pm UTC](https://qa.fmod.com/t/build-changed-only/15158 "2019-10-23T16:57:00Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@markkilborn](https://qa.fmod.com/u/markkilborn)
#### Post date: [October 23, 2019, 4:57pm UTC](https://qa.fmod.com/t/build-changed-only/15158/1 "2019-10-23T16:57:00Z")
Is there a way to build only the banks that contain data I’ve modified in a project, without having to manually select them in the Banks tab? Being able to hit a hotkey for “Build Only Changed Banks” would be a wonderful time saver. I’m hoping this exists and I just haven’t found it. Thanks!
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### Author:  [@richard\_simms](https://qa.fmod.com/u/richard_simms)
#### Post date: [October 30, 2019, 6:22am UTC](https://qa.fmod.com/t/build-changed-only/15158/2 "2019-10-30T06:22:56Z")
There should already be a kind of system in place that uses the cache folder to speed up building. Could you give some more information on the following:
- Are you using live update?
- How long does it take to build all your banks with and without a cache?
- How long does building take with no file changes for the banks?
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### Author:  [@richard\_simms](https://qa.fmod.com/u/richard_simms)
#### Post date: [November 8, 2019, 1:02am UTC](https://qa.fmod.com/t/build-changed-only/15158/3 "2019-11-08T01:02:12Z")
Hi, are you still experiencing banks building slowly?
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### Author:  [@markkilborn](https://qa.fmod.com/u/markkilborn)
#### Post date: [November 8, 2019, 3:20am UTC](https://qa.fmod.com/t/build-changed-only/15158/4 "2019-11-08T03:20:57Z")
I am using live update.
It takes quite a while, but we have a ton of banks in our project. After talking to our audio coder, I think that’s what’s happening here.
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### Author:  [@richard\_simms](https://qa.fmod.com/u/richard_simms)
#### Post date: [November 14, 2019, 1:48am UTC](https://qa.fmod.com/t/build-changed-only/15158/5 "2019-11-14T01:48:18Z")
Sorry, could you please clarify what “I think that’s what’s happening here” refers to?
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### Author:  [@markkilborn](https://qa.fmod.com/u/markkilborn)
#### Post date: [November 14, 2019, 3:52am UTC](https://qa.fmod.com/t/build-changed-only/15158/6 "2019-11-14T03:52:21Z")
Meaning I think our issue is simply the number of banks in our project causing the build to take quite a while, rather than the building of each individual bank being too slow.
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### Author:  [@richard\_simms](https://qa.fmod.com/u/richard_simms)
#### Post date: [November 18, 2019, 12:09am UTC](https://qa.fmod.com/t/build-changed-only/15158/7 "2019-11-18T00:09:59Z")
Ah, yes. Your programmer is correct, lots of files will take a while to finish compared to fewer larger size banks.