So far, I tried the following:
JioPages - terrible, kept on locking up and never could use it because of those locking issues.
Firefox - couldn’t find the right version for Shield.
Puffin - always kicked my out at some point
Chrome - can’t find the right version for Shield.
see if you can sideload firefox focus. To be honest its my fav android browser and as with most browsers mouse toggle or a fly mouse helps with navigation.
I liked JioPages but as you experienced it would lock up on me. Didn’t matter how many times I rebooted it would eventually lockup again. I even uninstalled/reinstalled to no avail.
I settled for TVBRo and like it, but have installed Firefox, but seem to keep forgetting I have it. lol
Also, I highly recommend downloading the Aurora Store and enable it to access the full Play Store. Only negative is you will need something like Mouse Toggle to navigate more efficiently.