I had small drop of ln2 left. Decided to try vantage GT 2 and 1500MHz was easy. 1530MHz run was fine until ln2 ended during the large explosion in GT2. Pot heated up very quickly so that run did not pass.

I think 1550MHz will be possible in 3Dmark Vantage.
Now I will try to get one more bench session, before my short break. Timing is so annoying