Any news on testing UE4 on Skylake CPUs? I’m going to try to get a friend with a build to do some UE4 tests as well.
Unfortunately we haven’t been able to as of yet. Speaking of which though, I would be interested to know if KD8SSF has had any chance to give the dual booting a try and what results came of that.
I was able to get a friend to test UE4 on a new rig with a 980, Skylake i7, and win 10. No problems. So I decided to update my bios again.
https://www.asus.com/us/Motherboards/MAXIMUS-VIII-HERO/HelpDesk_Download/
Updating to 1302 seems to have fixed my problem entirely.
Glad to hear it, What was the version number for your BIOS previously? I’d like to put it on a possible software conflicts list.
I’m fairly certain it was 502.
Unfortunately, the same problem is occurring for me.
Brand new computer, literally only installed Windows 7 64bit on it and got it all updated etc about 24 hours ago.
Same motherboard, 16gb ram, i7 6700k 4ghz. Everything is at stock/vanilla speeds.
It’s as if the editor thinks it is running in the background and is running at 1-2 fps to avoid chewing up resources.
I tried to update my bios to 1302 as BlackRang666 has done, however it made no impact.
I have tried to install on 3 different storage devices now. One was an old Velociraptor 10,000RPM HDD.
The other was an OCZ Vertex 4 SSD.
And the last attempt was on a Samsung 850Pro 1TB SSD.
I tried a bunch of high end games to see if it was something else, but nope, they all run perfectly fine.
I am stumped as to what I can do, as my previous set up was fine. It had an i7 2600k (stock speed), Asus Sabertooth P67, 16gb ram, windows 7 64bit, no problems running UE4.
Hello Orteum,
Are you also using a GTX 980 TI? If not, what graphics cards do these two computers have that you mentioned?
Ah, I forgot to mention GPU sorry.
GTX 680 on both builds, no problems before. Only now there’s a problem.
I tried installing on different hard drive too, to see if that would work, but nope, no worky 
I will more than likely be doing another complete re-format and reinstall of windows as well, as I randomly get huuuuuge slow downs in the operating system requiring me to restart the computer.
Next reformat I try, I will only have the Samsung 850 Pro inside of the computer and test UE4 to do a process of elimination.
I’m just confused as to why it runs as if it is in background mode…I feel like there is a setting somewhere I can turn off so it doesn’t go into background mode.
How is your framerate when you play in editor. My slowdowns were specifically when moving blueprint nodes, opening additional editor tabs, and mousing over UI. When playing, the frame rate was fine. If you have slowdown all the time, then something different is happening.
Oh no. Windows update forced a restart of my computer and the slowdown is back for me. I’m beyond frustrated.
Just for the record 
I have a 980ti on an old i5 750 @4ghz and the editor is smooth as butter. Since his BIOS update fixed his issue I think it may be MB related?
Oh no, that has gotta be frustrating!
The editor in it’s entirety is slow in general. You know the little green blipping animation up the top right (I think the tutorial button), the animation would go at 1 fps. When opening any windows, they would take about 1-2 seconds to open. In the first frame, it would half open, then the next second, it would fully open the window.
In blueprint, if you try to move around, it moves at 1 fps.
I should mention my Nvidia driver is currently 361.43 if this helps.
It came back after a windows update forced a restart on me. However, off of intuition I went and killed everything I could in the system tray. Exited nvidia control panel, steam, skype, and anything else I could. The issue seems to be gone again. Further testing is required to see which application specifically is causing the problem.
Ok, so I have finished removing all but my Samsung 850 Pro 1Tb SSD, I installed all the basics that windows 7 needs, and the UE4 launcher was the first thing I installed.
I downloaded 4.10.2 and to my surprise, it was running really smooth again…for about 5 seconds before it started to stutter badly…then maybe another 5 seconds before the performance degraded rapidly back down to 1-4.8 fps.
I downloaded 4.11 preview 2 to see if that fixes things. It didn’t.
However, I found some very strange behaviour.
While I am inside of the viewport, the editor runs at 120fps.
However as soon as I hover my mouse outside of the viewport on any of the window elements that show a tooltip when hovering, the fps immediately drops down to 1-3fps.
I then as soon as I detached the content browser, the performance dropped, and remained at 1-3 fps until the content browser window was either closed, or docked onto the main editor window again.
It is exactly the same performance as if having “Use less CPU when running in background”, only UE4 thinks that by navigating it’s menu’s that it is running in the background …even with that setting turned off.
I just did a clean install of the Nvidia 359.06 driver (that’s what I had on previous system), to see if that was the issue, but it made no difference unfortunately
Also, I noticed the Launcher using up 662mb ram and about 8% CPU constantly, which is pretty odd.
UPDATE:
I updated to windows 10, hoping it might help. It made zero difference
I hope it’s not some wierd motherboard issue…
I just did a test to see if it’s even an Unreal Engine 4 problem, as I have now gone from windows 7 to windows 10 and have the exact same problem.
I disabled 2 of my monitors (I have 3, like BlackRang666), and suddenly, UE4 runs fine again.
I noticed that there was a similar lag in my task bar in windows when hovering over something like the google chrome browser; the animation for bringing up a preview of the window had some kind of lag in it.
So then I tried just 2 monitors, and the performance dropped massively, but not as bad as having all 3 monitors running.
I then checked this out online and found other people with the exact same problem within windows using multiple displays.
The thing that makes me confused however is that I’ve been running 3 monitors for years without a hitch, now suddenly, it’s not running so great.
I don’t think Epic Games can help with this issue as it is related to windows, not UE4, however this points us in the right direction and gives us something to go off to try and find a solution.
Out of curiosity, I moved my main UE4 window to my left most monitor, and suddenly it’s all smooth again, but if I move any of the UE4 windows to the primary or right most monitor, constant lag,
Having done a bit of research, and remembering something, my primary monitor was set to 59hz before the reformat, where as the other 2 were at 60hz…now Nvidia control panel only lets me choose 60hz in windows 10…
Hey Otreum,
When you’re in display settings and you hit “Identify” Which number comes up on your “Primary” monitor? Just curious if it matters which port your primary monitor is plugged into on your GPU. Try switching them around and seeing if that helps.
-.
Unfortunately it made no difference.
The primary monitor was on DVI, which was number 3. Left is on display port and number 1, right on HDMI which is obviously number 2.
It’s never been an issue up until now, so my thinking is perhaps some weird windows update was done which caused the issue maybe…
Either that, or later Nvidia drivers, but still that’s not an issue as it wasn’t an issue before.
On windows 7, people said to disable Aero, that didn’t fix things either, however was the most common “fix” for people.
The odd thing about this issue (at least in my case) is every other window in Windows 7 or 10 is fine, they animate ok, but then while I was in Windows 7, it would randomly decide to stutter and the system would slow to a crawl unless I disabled Aero, even running any Origin game had issues, however The Witcher 3, Dragons Dogma, Alien Isolation, etc all ran perfectly ok.
It’s just such an inconsistent issue that it makes things very frustrating and depressing, as I have gone from 70+ hrs of game dev to …zero
I tried a few different older Nvidia drivers too, but that didn’t fix anything sadly.
Did you try BlackRang’s fix at the very bottom of this page? Closing each of your system tray items. Preferably close them one at a time so you can see which one is causing problems.
I did what you did, closed down the task bar stuff, and yeah, the problem oddly disappeared. I narrowed it down to being Sonic Suite 2 in the task bar. Closed it down, restarted UE4 and immediately better performance.
Closing it down while even in the launcher doesn’t seem to have any effect until you re-open the launcher and UE4…
I thought it was a crazy suggestion, but it was better than no suggestion at all. In fact I almost didn’t bother trying 
BUT, it worked. It is the Sonic Suite 2 audio software that comes with some of the ASUS motherboards…I had a hunch that software was poop…THANKYOU!!!