little lag spikes again

[spiceant]

im sure that some of you know the litle lag spikes that occur when you:

1. Select a city
2. Go to the advanced mode of a city
3. Select a unit
4. Open/Close an advisor screen
5. togle off/on show tiles

these lag spikes usually consist of the game freezing inbetween 0.1 seconds to 0.5, all in all its not a very big deal but it does make the game this litle bit more choppy and i hate that.

what can i do about this annoyance?

i attached my Dxdiag for some details. I asked this question before, but my video card changed in the meantime and the previous instructions given dont help anymore.

 

[spiceant]

humptiebumptie??

 

[Snazzye]

what size map? how many civs?