I have had occasional crashes with V11, but apparently not as many as others have posted here.
Several times recurrent crashes were solved by restarting the computer. I have had more crashes on 11 than 10, but not enough to really say it's significant. I could go weeks without crashes on 10, now I go days. It does seem to be random and there does not seem to be a unifying thread to the crashes.
On the positive side, I think it starts up faster. I'm not sure that the average charting is really any different. Clicking from Most recent to summary to demographics is still much slower than V6 and below. Clicking to account information is still glacial but no change from, I think, V 9 or 10.
My issue with 11 is still that the prescription module still seems clunky. The fact that it takes a extra click to send all the prescriptions to the same pharmacy is baffling to me. I still do not understand how the program picks randomly what pharmacy it will send if you do specify and the patient has multiple pharmacies. The fact that on the "send" page you only get a number of the, say, Walgreens pharmacy rather than actual location has resulted in repeated reworking of Rxs requiring more time. The fact that it will not figure out that tablet Rxs require tablet in the field is frustrating. All of this slows down the process. Put it all together and it takes longer to Rx.
Otherwise I think it's overall reasonably stable for me, but would probably never be perfect.
I'm still personally bugged that after all this time I still cannot search by parent name. This has been requested multiple times by many people but not met their threshold for importance.