This, shouldn't be impossible, and I did think I had a chance, about a month ago, when shot a 94, at a fairly tricky course - Dainfern, In Johannesburg.
The ball does travel further (at altitude), but, long courses, dont really suit me, so am focusing on medium to short courses, which have a lot of shots, +/- 120 in to the flag, after a 200 metre drive.
I save all my scorecards, on golfshot.com .. and, my best, over the last 2 yrs, is 92 .. so, 90 should be possible, but, am remodelling parts of my swing, and, it wont be easy.
Played Observatory today (a tight run-of-the-mill) course, and shot 48 for 9 .. thereabouts, but, not really putting a 90 in danger ..
Anyway, its an achievable goal, and one I would be delighted to tick off.