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What's a "Negative time delta during VM update"


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First, I'd better fess up that I'm crossposting this question from Nexus Forums - I'm thinking I may have better chances of getting an answer here than there.

 

However, in my defense, I'm in the process of transitioning from TPC to STEP - although the game I'm currently testing on is NOT a new game.

 

Anyway, here goes:

 

I'm getting a lot of these "negative delta" errors in my papyrus logs in game that seems to be running just fine otherwise. (Just fine means: as far as can tell, at this point, for the time being, cross your fingers and knock on wood!)

 

I tend to get longish clumps of them, and they don't seem to connect to any other kind error or warning. They can come right in the middle of, say, Frostfall messages, right before or after a VM freeze or anywhere else. Here's an example of a few lines:

 

[11/23/2013 - 01:08:48PM] warning: Negative time delta during VM update - clamping to 0. (Current: 259419, Previous 259420, Delta: -1)

[11/23/2013 - 01:08:49PM] warning: Negative time delta during VM update - clamping to 0. (Current: 259527, Previous 259528, Delta: -1)

[11/23/2013 - 01:08:49PM] warning: Negative time delta during VM update - clamping to 0. (Current: 259536, Previous 259537, Delta: -1)

 

I think "VM" means virtual machine, and I'm pretty sure that the message means that for some reason the game is having trouble keeping itself in sync. ("In sync" ... with ... um itself, I guess.)

 

I'd be perfectly happy to ignore the whole business, but (a) I want to understand what's going one, and (b) since the log now and then generates about 100 lines of this stuff in 4-5 seconds, I'm thinking that it may not be completely benign.

 

OH: I've switched mods in and out for hours, and I can't seem to connect the problem to any one mod, or any other set of circumstances. MY one - very, very vague - idea is that alt-tabbing out of the game could have something to do with this - or maybe even the SKSE plugins in that help that work better on my AMD card ... 

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Posted

Please post the Papyrus section of your Skyrim.ini configuration file. Time delta is the amount of time elapsed between frames. What the error means is that the game is detecting a negative time difference between frames, which is unusual, for sure.

 

Has this caused any problems as far as you can tell?

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