@MrInfro
1.turning off hardware accelerarion,
2.disabling the in-browser ad block extension was the trick (for me....it appears so far) Using ad-guard extension (a week in ......no problems)
3. i also set browser to take a dump upon closing....shutdown)

@eebee Same here Opera One is unusable with crashes and out of memory notifications. Been trash for a month now after working fine for 5 years.