Hi,
There seems to be something wrong. I have a PC and a laptop. UE5.4.4 works flawlessly on the PC and it constantly lags and sometimes freezes for a minute or two on the laptop. But the PC has worse specs than the laptop. The PC has: W11, Ryzen 5 7600X, GTX 1070, 32GB ddr5 ram. And the laptop (ASUS ProArt PX13) has: W11, Ryzen 9 AI 370HX, RTX 4070, 32GB ddr5 ram. Both same OS and ram specs, but laptop has a slightly better CPU and much better GPU. I tried checking if UE5 runs on iGPU or dGPU on my laptop, but it is GPU0 and GPU0 is dGPU in my case. I tried searching for similar problems on the internet, but found only one guy on this forum that was told that his specs aren’t good enough for UE, because he had 4GB ram, well ram shouldn’t be the issue in my case, also it was happening on a fresh vechicle game template project when I didn’t run it yet, didn’t edit the map, just was editing some blueprints and tried to promote one output to a variable. Sometimes I just try to move one thing within blueprint and it freezes, it even froze when I was just moving my mouse over blueprint, I guess it just freezes on random moments. I’m really buffled why would it perform so bad on these specs and I’m worried, because I will be doing a presentation on the university on Neural Networks in UE5 on thursday. I wouldn’t want it to freeze during that.
Harware
Double check the cpu/gpu temperature and usage %. Make sure the air flow is not blocked and is properly ventilated.
Software
Update your bios(if you know how to) and use nvidia studio driver.
Last Resort
In unreal engine, set scalability to high and disable real-time rendering if that could help on the lag and freezing.
Hardware: All temps about 60°C, GPU usage was getting to 100% until I locked editor to 30fps, now it uses like 30% max. CPU also never above 50%. Airflow is never blocked. About proper ventilation, I’m not sure how it’s set up there, because I won’t dismantle it, because it would cancel my warranty on it. And the fans seem to be almost all the time on 100% speed (on pc not faster than in desktop).
Software: Everything updated, I was doing full check like two days ago, I use studio driver from the beginning (but I’m on game ready driver on pc where it works good)
Last resort: I had it set to max at first, but because pf these problems I tried to set it to scalable to fix it, didn’t change nothing. I don’t know how to change real-timr rendering though
What are the chances the laptop’s bloatware is to blame? There is a bunch of overlays, system / performance monitors UE does not enjoy sharing the screen with.
Disabling vsync/uncapping fpses might help.
I experienced strange issue with 5.4 and older versions where vsync/fps lock causes editor to halve its fpses the more windows in ue editor there are open.
If you manage to find way to replicate the lag, you could try recording with unreal insights (performance profiler) or software like very sleepy the exact moment the freeze occurs and check the function stack while spike occurs
Might help. Theres also possiblity that high temps of cpu/gpu cause throttling to lower temps as failsafe which might be causing stutter/jitter