Very slow screen repaint in Citrix

I don't know the answer re the Citrix Server since I am on the Client side.
The version shown on the About message box is Version 10.100.55836(256-bit SSL.

What application are you running from Citrix? Several applications have known painting issues in a seamless environment, including one from Citrix - the XenApp Advanced Configuration.

Also, some applications do not running in a color mode less than 16bit, with a few coming to mind that only like 32bit.

10.1 is old for sure.
If you connect to the Citrix server but to a published desktop (assuming this is a published application), do you have the issue?
If you connect using RDP (the Microsoft RDP client, MSTSC.EXE), assuming you are allowed to do that and that port TCP 3389 is allowed to your Citrix/TS, do you have the issue?

Cláudio Rodrigues
Citrix CTP

In answer to Jacob78 question:
Within Citrix "Published Desktop" any and all applications work just fine. It is when I switch to TN3270 and back that the problem occurs. When I return, the "Published Desktop" should repaint immediately. Instead the TN3270 image remains. Only the 4 borders of the "Published Desktop" are visible. That's when I have to "play games" to manually force the screen to repaint via "Show the Desktop".

Another way the lack of repainting is obvious is if I left click on the top blue bar and drag the window part way down my monitor screen, then - without releasing the mouse - I bring the window back to its original position; the result is similar as if I had "dipped the window in white paint". The whole area that was momentarily "under water" (so to speak) looks like a white canvas and has not been repainted. The area that was not dipped under remains properly painted.

In answer to tsmvp:
I apologize but I don't understand your first question.
As concerns the second question, "connecting using RDP (Microsoft MSTSC.exe)", I am not familiar with it.

Christian,

If the problem isn't happening for other published applications, then it isn't your bandwidth.

1) Are you publishing this application with 16 or 24 bit color?
2) Have you tried publishing this in a fixed window instead of seamless?

In answer to Jacob78
(1) I connect via Comcast high-speed Internet and have plenty of speed.
(2) I use 16-bit colors under Citrix. (Incidentally I am not "publishing" anything, only accessing various applications under Citrix "Published Desktop" [Outlook, Word, Excel, Access, etc..] and also switching back and forth to TN3270 in order to connect to an IBM mainframe).
(30 The problem occurs whether I am using a fixed or seamless window. Some websites claim that the problem should occur only in a seamless environment. That is not true in my case.

It really feels like some developer - somewhere in the system - failed to include a refresh command under ordinary conditions. Interestingly enough, if I leave the Citrix Published Desktop ON while going to lunch and come back 45 minutes later, by then a logon dialog box will appear in which case, the problem doesn't occur as the logon box forces a refresh of the screen. Otherwise I have to manually cause the screen to repaint hundreds of time every day and this becomes both time consuming and tiresome.

One other consideration: some websites suggest that IE 8.0 sometimes causes similar behavior. While I do have IE 8.0 installed on my workstation, I am not sure I understand what relationshiip - if any - this might have with Citrix.