This is a known bug.
This makes Speicherbereinigungsmod nahmlich following.
At the end of your time interval is nahmlich of video memory on the graphics card aufgeraumt something so the game will be shown again runs a little river term. Now, if the time interval is set too kurtz (every 8 sec. For example), then runs the garbage every 8 seconds. at.
And if this garbage Anlauft, then at this moment, the ongoing conversations are interrupted.
I have the time interval minutes with me so to 10. Set. Dadurchfaalt this is not so on, and it will not lose so much information. I use this mod nahmlich too, although I do this with my video memory rather not perfect (my graphics card has 512MB).
This patch was / is more likely for graphics cards with a somewhat smaller graphics memory have been intended.
I also weiu nciht whether there are now a newer version.
More details to diesm Mod habeihc Geard again found:
See here.
The last page (page 4) where there are two alternatives to the upper Speicherbereinigungsmod.