I haven't experienced any of that, been working fine for me. It could be cause I don't have a lot of apps installed. This phone only has 1gb of ram, but only has access to about 650mb and the rest is taken up by the system.
When you have a lot of apps on a phone with little ram, lag and freezes are to be expected. This usually means the apps are being stored in a swap space rather than ram which is slower for the phone to access.
Oh and I don't use chrome... Like bnb25 said, chrome sucks lol.