Perhaps your internet is slow - not the PC.
How can I do that?
I have a good internet speed and using modemPerhaps your internet is slow - not the PC.
Raise a ticket at IB. You could turn on wifi hotspot on your smartphone and try connecting to IB using that to see if it is your cable.

ok so it must be a virus maybe. I took the PC from my brother and he used it for daily tasks and for playing games. Maybe that is why. Should I just change the hard drive then?PC is fine. It almost certainly is your connection and/or virus software getting in the way - or your virus software didn't do it's job and "something" is running in background using resources.
4 monitors and 24 charts is nothing.
Also hope you don't use same PC for trading and all other tasks like surfing the web/etc?
IB support has stated several times to me that TWS is hard limited in the resources it can use because it runs in a Java virtual machine. Doesn't matter if you have a super computer at home. It will still run like shit if you try to push TWS too far. Full stop.
I was told I was pushing TWS too hard with the amount of charts and indicators I wanted to use despite being within the 100 lines of data limit. So yeah...If you are any sort of power user you gotta pay for a 3rd party software. IB isn't really trying to improve TWS.
oh damn, do the charts take time to load too? and when you change tickers on the watchlist, does it feel like it pauses or takes time to change?I have an I7 4790 overclocked at 4.6 and I find TWS is a bit slow to load but this is pretty much normal . If you are going to upgrade spend the extra money and get an I9 .
Yes you are right I guess.. sucks though because it terms of functionality I prefer TWS over any other software