Can COM interfere with TC execution ?

We are using a C++ COM which is accessed by TC 10.30 using:

Set oExe = Sys.OleObject(<COM_Object.exe>,"")

Now does it have any issue effect on TC ?, because we are seeing a typing issue (moderate speed) when COM_Object.exe is running in the background. If we terminate the COM_Object.exe while typing, then we don't see any issues at all (high speed).

Is there anything that needs to be taken care for this situation ?