Using 4.5.1, the performance of the C# editor seems to be slower than using 4.5.0. After start of Visual Studio, everything is normal. But soon, typing begins to feel slower, there is a delay of about 1-2 sec from the key stroke until the letter appears.
Disabling syntax analysis with Ctrl+8 doesn't help. Neither does disabling Solution-Wide Analysis
Disabling the Rehsarper Add-in (using Tools ==> Add-In Manager ==> uncheck Rehsarper checkbox), and re-enabling it, does help however. Until about an hour later, when the slow-up begins again...
Please look into this. Performance of 4.5.0 has been great (the first time since ancient 2.5 release...), please don't let the quality go bad again!