After April update I have the exact same problems like you are experiencing.
Before the April update it never hung a single time in months.
I just closed the laptop and continued working next day, for months.
Hardly ever needed to reboot!
Now, the mouse and keyboard freezes.
What I noticed is when the memory becomes over 80% filled (See task manafer) it has a higher chance to hang and when I
dont do things with the pc it can also hang after a while..
I did not do a test yet with other browser than Chrome.
I also updated the drivers of mouse, and shipped drivers with the laptio but it didnt help.
Page file increase havent tried yet.. It could have to do with this.
After it, you guys you still experience the problems?
Somebody knows about a permanent fix?
Paul