Many thanks for the quick reply.
Unfortunately, no success with Hardware acceleration disabled completely. Also, most application requiring activeX are now useless :-(
Anyway, I don't have network delays, with or without TV running ... Networking runs as before, it's just the problem that TV needs 50% of my machine performance doing nothing...
50% CPU load even upon startup of Teamviewer, before starting any remote control session. Just the bare application.
Tried also disabling any proxy usage, as was suggested in some earlier threads.
I wouldn't bother if the TV process would behave like any normal process, could be killed when the Administrator likes, etc.
Neither this is possible, nor does it help shutting down the Teamviewer service (shown running) from the services control panel.
Maybe I should look for the Version 7 on some places, and replace all instances of Ver 8 by good old Ver 7.