when i'm working on my VB solution CPU load of VS is permanently at 50% .. 90%. The CPU fan is working permanently at full speed and heats my working place. When i disable R# this phenomenon disappears. There are some CPU peaks, for example when i acitvate intellisense or save a file, but most time the CPU load is at normal range. The behavior seems to be VB specific. When i load a C# solution i don't have this problems.
I think the reason is a inteference between the background processing of the VB editor and the background processing of R#. I had such problems since you started to support VB, sometimes more, sometimes less. The current 6.x release has similar problems, but not in that strength. The first three EAP builds of 7.x also did not have this problems.
[Edit] While investigating the problem further i noticed that CPU load starts rising when i make changes which results in syntax errors. After eliminating the syntax errors the CPU load decreases to a normal level. Another thing which seems to cause the high CPU load is intellisense and parameter popup. I normally type quite fast so that intellisense and parameter popups did not have a chance to appear. When i stop typing it takes mostly some time (around 10 to 15 seconds) until the popup appears.[End Edit]