x

Search in
Sort by:

Question Status:

Search help

  • Simple searches use one or more words. Separate the words with spaces (cat dog) to search cat,dog or both. Separate the words with plus signs (cat +dog) to search for items that may contain cat but must contain dog.
  • You can further refine your search on the search results page, where you can search by keywords, author, topic. These can be combined with each other. Examples
    • cat dog --matches anything with cat,dog or both
    • cat +dog --searches for cat +dog where dog is a mandatory term
    • cat -dog -- searches for cat excluding any result containing dog
    • [cats] —will restrict your search to results with topic named "cats"
    • [cats] [dogs] —will restrict your search to results with both topics, "cats", and "dogs"

Why is UE4 running so slowly?

Why is UE4 running so slowly? Why does it take 10 seconds to close a window? Why just modify a node to save the material, and the entire map needs to compile thousands of shader? Why do we need to wait for more than 10 seconds to delete a file? UE4 is like a well-equipped grandma.

Product Version: UE 4.20
Tags:
more ▼

asked Sep 20 '18 at 08:09 AM in Using UE4

avatar image

alvinzm99
6 1 1

avatar image Everynone Sep 21 '18 at 02:11 PM

What are you running it on? I have an old quadcore and things are pretty snappy. If you're on a lappy with 5400rpm drive, that could be a bottleneck.

avatar image ThompsonN13 Sep 21 '18 at 02:32 PM

yup its all about available performance. you didnt mention your system specs at all. if you try to run the engine on a potato then your gonna have a bad time. my cpu is 4th gen intel i5, 7200rpm HDD and it runs the engine without any issues. also you may want to look at any programs running in the background as that could slow you way down as well. when compiling shaders the engine will use all available resources so every little bit counts. memory is another factor that could be slowing you down, if the system has to constantly retrieve information from the hard drive because there isnt enough ram to store it all then its going to really slow things down.

avatar image alvinzm99 Oct 23 '18 at 03:26 AM

I am runing on this:alt text

and GTX1080, 256G SSD... Of course most time it's runing well,but sometimes the computer is so laggy that annoy me. What i'm talking about here is the feeling when operating UE4, All I feel is compile and wait. I cant't just delete a file in UE4 like in windows or unity.It's not delete,it is d--e--l--e--t--e. And do u want to change something? ok,compiling.Do u want to update something?ok,compling.And du u want to bring sth new? ok,compling... But it doesn't mean that UE4 is not a good engine.On the contrary,it is very good.Excellent visual effect and effective pipeline make this convincing. I'm just grumbling about the flaws.

11.png (4.0 kB)
avatar image Everynone Oct 23 '18 at 07:23 AM

I have a similar rig and never thought about the engine performance being inadequate. Observe a performance monitor while you do the things that you do, see which component(s) is being taxed and bottle-necking your system. CPU, drive I/O are the usual culprits.

Perhaps you have some other software that spikes when you perform some of the operations. Anti-virus packages can be dodgy and eat up resources, even Windows services can misbehave.

(comments are locked)
10|2000 characters needed characters left
Viewable by all users

0 answers: sort voted first
Be the first one to answer this question
toggle preview:

Up to 5 attachments (including images) can be used with a maximum of 5.2 MB each and 5.2 MB total.

Follow this question

Once you sign in you will be able to subscribe for any updates here

Answers to this question