troubleshoting rdp

i got a 2008 environment, users connect from an internal network to an internal rdp server(2008). i am encountering a problem with freezing connections when the users are working in the environment.

anyone who can advice me in how to troubleshoot this?

i also noticed that outlook is causing problemes in the rdp session;

KeywordsDate and TimeSourceEvent IDTask Category
Classic31-3-2016 9:02:58Application Error1000(100)Faulting application OUTLOOK.EXE, version 12.0.6691.5000, time stamp 0x52e8c57c, faulting module pstprx32.dll, version 12.0.6658.5000, time stamp 0x4f32182a, exception code 0xc0000005, fault offset 0x0000bb7f, process id 0x1610, application start time 0x01d18b0e3bae5ee2.