UI slow on external display with version control log open

Since upgrading to PHPStorm 2018.1, running on the latest 64-bit JVM from Jetbrains, I'm finding the UI to become very slow when the Version Control Log tab is open.  The entire UI slows a little and scrolling the log list is extremely slow.

Edit: I discovered this is only an issue on my secondary displays.  On my Macbook Pro's pro's built-in laptop monitor there is no UI slowdown.

I'm wondering if there's a way to limit the length of the version control log when integrated with git.  I've set the Version Control -> Limit history to 200 and the Version Control -> Background -> Changelists to cache initially to 200 but I still get the complete git history.  Any way to limit the displayed list or improve performance of this tab?

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For me, it takes like 20 seconds from when I click the closed tab until it actually opens it. And in the meantime PHPStorm is completely locked. :(

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Got notified via twitter that the UI slowness on high resolution monitors (such as my secondary displays) will be resolved with PHPStorm 2018.2.  

https://youtrack.jetbrains.com/issue/JRE-526

I'm still interested in limiting version control log length to optimize the experience.

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I think I have a different issue, as my whole computer freezes and I get a `threadDumps-freeze-20180411-095104-PS-181.4203.565-33sec` folder in the logs.

I will create a new thread.

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