Try motivewave and ninjatrade, I got the same problem. Ninja trade I had only one chart opened. Took a few seconds to load. Motivewave I had between 6-10 charts open, some timeframes take a lot of time to load almost same or more than TWS and the market is not even open.
But you were using IB's data feed for those programs no? If you were it shows it's an IB server side thing
This is how I did it with Motivewave https://www.motivewave.com/brokers/interactive_brokers_setup_guide.htm
I get that with charts at times but I assume it wouldn't be an issue or takes very little time to load with very powerful CPU
I formatted my Win 10 and it looks faster now. I think if I upgrade my PC and internet sped the issue can be almost solved. Hopefully
When you upgrade spend the extra $$ ( right now on New Egg it's only $40) for a 10850K and ignore what the other guy said about TWS and RAm just get 32 gigs. I assume you are going to build a new PC rather than buy one ??
Yes you are right. 10850K would be better than 10700k for a bit of money. I think good CPU and good RAM can solve the issue. If you go to Multicharts system requirements, they mention you need at least 8cores if you are running more than 10 charts, so I don't think it is any different for TWS specially that TWS is heavy on the PC. When I do it, I'll let you know how it goes
Check this guy for example using Sierra Charts https://www.sierrachart.com/SupportBoard.php?ThreadID=37575