This new firmware on my roku4(4400x) and youtubetv s/w 1.0 build 80000014 has been rendered almost unusable. Stalls all the time when loading or chaging channels, trying th o use the dvr functions repeatedly stalls to the point one has to exit and try restarting the app continually. Obviously this had not gone through even a minimum of testing before rollout. This after months of use on the previous 9.2.0 with very minimal wobbles. This needs to be addressed immediately, don't force folks to change providers simply because roku can't do their job.