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Dolphin, the GameCube and Wii emulator - Forums › Dolphin Emulator Discussion and Support › Support v
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External display makes Dolphin run slow...
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External display makes Dolphin run slow...
09-03-2018, 05:03 AM
#1
IJustWannaPlayDoubleDash... Offline
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I gots a problem:
When I play Dolphin on my laptop, with only using my laptop as the display for the game, Dolphin can run Super Smash Bros Brawl at roughly 60 fps. Once I plug in an HDMI cable for an external monitor, the fps drops to 30 and the game becomes very laggy. Based on my troubleshooting, I have determined that my laptop and its HDMI port are not the problem, and I was also able to isolate that the HDMI cable and the external display were not the problem either. This means that the only thing that should be a problem is the Dolphin emulator itself. I am not sure what settings (if any) I should change or if there is some other thing/process that I should undergo. Please let me know!
Thank you!
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09-03-2018, 05:51 AM
#2
JMC47 Offline
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I had this problem with my laptop on a GTX 1060 as well. The problem was my laptop's HDMI port runs through my onboard graphics.
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09-03-2018, 06:02 AM
#3
DJBarry004 Offline
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But, shouldn´t be SSBB light enough for the integrated GPU? With no enhacements I mean.
Rig 1: Windows 10 Home | AMD A6-1450 @ 600/1000/1400 MHz | AMD Radeon HD Graphics 8250 | 4GB RAM | HP Pavilion TouchSmart 11.

Rig 2: Windows 10 Pro | Intel Core i7-2640M @ 780/2800/3500 MHz | Intel HD 3000 Mobile | 8GB RAM | Dell Latitude 6320.
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09-03-2018, 12:51 PM (This post was last modified: 09-03-2018, 12:55 PM by themaster123.)
#4
themaster123 Offline
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Are you duplicating you display. try running it on the second display only. this setting can be found with windows key+p. I had this problem with normal game \ dolphin on my laptop in the past. My Laptop gtx 1070 would always drive the second display while the integrated ran the internal cause performance issues. looking at you hardware I can see this been related.
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09-03-2018, 01:11 PM
#5
IJustWannaPlayDoubleDash... Offline
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(09-03-2018, 05:51 AM)JMC47 Wrote: I had this problem with my laptop on a GTX 1060 as well.  The problem was my laptop's HDMI port runs through my onboard graphics.

The problem with that idea is that this is a new issue. I was able to achieve full frame rate while duplicating my screen about 4 months ago. This is a problem that arose yesterday. 
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09-03-2018, 01:14 PM (This post was last modified: 09-03-2018, 01:16 PM by themaster123.)
#6
themaster123 Offline
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Have you update either the nvidia or intel driver if you don't know look under windows update history. I have issue with my laptop with the second display due to a driver updated and it cause problems. Windows update can update driver with you noticing you not careful.
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09-03-2018, 01:20 PM
#7
IJustWannaPlayDoubleDash... Offline
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(09-03-2018, 12:51 PM)themaster123 Wrote: Are you duplicating you display. try running it on the second display only. this setting can be found with windows key+p. I had this problem with normal game \ dolphin on my laptop in the past. My Laptop gtx 1070 would always drive the second display while the integrated ran the internal cause performance issues. looking at you hardware I can see this been related.

I will try that, but I have been able to duplicate the displays before. This is a recent problem that has arose.
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09-03-2018, 01:23 PM
#8
IJustWannaPlayDoubleDash... Offline
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(09-03-2018, 01:14 PM)themaster123 Wrote: Have you update either the nvidia or intel driver if you don't know look under windows update history. I have issue with my laptop with the second display due to a driver updated and it cause problems.  Windows update can update driver with you noticing you not careful.

How would I look to see if a specific driver was updated in windows update history? I have Windows 10. 
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09-03-2018, 01:49 PM
#9
themaster123 Offline
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It under setting / update and security/view update history. You may have to scroll down to driver updates to see it. Also while less likely a update to dolphin could have cause this. If you find no updates driver it might be worth use a older developmental build to see if there was a bug.
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09-03-2018, 04:46 PM
#10
mbc07 Offline
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If you're getting capped at exactly 30 FPS, check if the refresh rate of the external display isn't set as 30 Hz. That occurred once with me...
Avell A70 MOB: Core i7-11800H, GeForce RTX 3060, 16 GB DDR4-3200, Windows 11 (Insider Preview)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)
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