I am experiencing the X-freezing, with moving cursor, issue when using composing. I know it has been reported many times, but I didn't found topic with this problem reported while using the new 100.14.** drivers...
I am using Gentoo Linux, and I have tried playing with the kernel cheatcodes as suggested in the sticky, and with this was useless.
I have followed the Gentoo Documentation
to build the kernel.
I think that every other usefull information is in the "nvidia-bug-report.log" attached.
This was with the old 100.14.09 drivers.