Epic Games Store¶
Fixing performance bug on EGS¶
On EGS, many people report performance problems and long load times in the launcher, while many others do not. After experimenting with some settings (to boost download speeds below), I may have found the cause for this. It seems like the HTTP thread sucks away time from other threads, which basically makes your load times inverse to your HTTP speeds possibly, as the UI cannot load due to long pause times from HTTP.
- Go to
- Paste in the following:
[HTTP] ; Limits the HTTP thread to only take time away for the duration it is able to do work ; Ref: https://twitter.com/phyronnaz/status/1489317573485383680 HttpThreadActiveFrameTimeInSeconds=0.00001
Boosting Download Times¶
For many on stable and fast Internet connections, although EGS has decent speeds compared to other launchers, it does not reach the peaks we would like. For this guide, I will provide some settings to max out your download/install speeds on EGS, for gigabit fiber ethernet connections. Other connections may suffer with these settings, but the documentation provided may help you to better understand the available settings and tweak on your own. Feel free to contribute settings which work for your Internet!
This also includes the above “Fixing performance bug on EGS” tweak, as it also improves download speeds.
- Open Epic Games Store.
- Click your Profile Icon and click Settings.
- Enable Throttle Downloads.
- Enter your max Internet speed in kilobytes per second. This will allow EGS to stably target your download speed, which seems to reduce cases of huge amounts of variance and jitter in download speeds. For example, assuming a fiber connection, setting this to
100000, instead of the download speed jumping up and down between 99MB/s and 80MB/s, you can remain at a stable 100MB/s with this setting.
- Close Epic Games Store.
- Go to
- Paste in the following:
[HTTP] ; Use low timeouts as recommended by Epic ; Ref: https://www.epicgames.com/help/en-US/technical-support-c90/general-support-c91/how-to-troubleshoot-connection-issues-a3510 HttpTimeout=10 HttpConnectionTimeout=10 HttpReceiveTimeout=10 HttpSendTimeout=10 ; Limits the HTTP thread to only take time away for the duration it is able to do work ; Ref: https://twitter.com/phyronnaz/status/1489317573485383680 HttpThreadActiveFrameTimeInSeconds=0.00001 ; Max number of concurrent libcurl requests. This is used as a cap for ChunkDownloads. ; You can vary this lower if needed for slower connections. HttpMaxConnectionsPerServer=32 [Portal.BuildPatch] ; Set to the max we set, 32 seems like a good value to boost speeds on strong internet connections. ; You can vary this lower if needed for slower connections. ChunkDownloads=32 ; Connection scaling seems to be overly cautious, causing throttling on what you can adjust manually for yourself with the ChunkDownloads options. ChunkDownloadsDisableConnectionScaling=True ; These settings determine how much memory is used for downloading and installing chunks. ; These can only go up to a combined 2048 and are each limited to a max of 1000. ; In my case, I prioritized more download/load chunks over install chunks. CloudSourcePreFetchMinimum=768 CloudSourcePreFetchMaximum=768 ChunkDbSourcePreFetchMinimum=768 ChunkDbSourcePreFetchMaximum=768 InstallSourceBatchFetchMinimum=512 InstallSourceBatchFetchMaximum=512 ; Increase memory limit for chunks ChunkStoreMemorySize=2048 ; Makes the speed displayed update at the maximum of 1 second, instead of over 10 seconds. DownloadSpeedAverageTime=1 ; Try for 500ms retry times more RetryTimes=0.5 +RetryTimes=0.5 +RetryTimes=0.5 +RetryTimes=1.0 +RetryTimes=1.0 +RetryTimes=3.0 +RetryTimes=3.0 +RetryTimes=10.0 +RetryTimes=10.0 +RetryTimes=20.0 +RetryTimes=20.0 +RetryTimes=30.0
For more information, Epic Games Launcher uses the same ChunkDownloader and HTTP systems as in Unreal Engine, so its source code and documentation is available for everyone.