Why does rendering go faster when unplugging second monitor??

[Makavelixthadon]

Hey guys,

I have a 2 monitors and I noticed that if I unplug my second monitor the rendering goes way faster? why does this happen? weak GPU? I just never thought a second monitor would have an impact on render times. 

[Peru Bob · Accepted solution]

It could be that your power supply is marginal, and the video card is using more power and/or running hotter with two monitors.  The CPU might also be throttling back.

[Michael Grenadier · Accepted solution]

Peru Bob's on the right track.  When I first started posting here a few years ago, some people made fun of me for suggesting that overheating could cause issues...  but it can have an impact...  but it's also gonna take some additional processing power to feed a second monitor...  Gotta say I've seen serious performance hits when working with a second monitor...  Sometimes changing the renderer in. project settings: general to software sometimes helps mitigate the problem and don't think overheating would be effected by this change (bwdik) .    The fact is I don't know enough about the inner workings of Premiere to give you a definitive answer.   Just know how to work around the issue... at least how it effects my workflow.