it's a laptop so alas, you get such woes :/

1. Probably bloated up with crappy useless software, like the manufacturers advertising, espcially SH*T like Norton, ugh!!! Most laptops coe fitted with a load of rubbish programs that just slow your system down.

If that is the case, I'd recommend IF you know what yer doing, uninstalling all that stuff they add in, you only want Widows and the apps you NEED on a laptop, like video drivers/apps, nothing else. 

2. The video card is probably the othe rmain cause, remember, Vue uses "OPEN GL" display, which needs a decent video card ot get the best out of it
   what to do is turn all your view ports towireframe and turn off textures in your Display options

Also, turn the maximum number of undo's down to 1.

3. Could be the CPU is overheating, a major problem with laptops and another reaosn I avoid them

I include a pic to try and suggest the best settings for you :)

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