My iPad is pretty old, so I think it runs out of memory and so on pretty easily. When it crashes... well, it sucks, but that's all there is to it. I was shattered when I crashed out of a 9 hole 90,000 Turf War CC pass game whilst 4 shots up with 1 to play. DOH!
I find by clearing out other open apps I can tend to get better performance and minimise the occurrence of crashes. ie. Double-tap home button and sweep all apps other than WGT up and away. When I start seeing "low memory" warnings I also tend to power cycle my iPad.
Another issue I'm having consistently are the flagsticks disappearing on St Andrews back 9 (this one seems pretty persistent), which makes is harder, though not impossible, to play. This seems mobile-centric, and has been reported by plenty of people I think
I also get my avatar flickering badly, most often in head-to-head games. Like the hat or shirt and sometimes even the arm disappears/reappears rapidly. It's annoying, but doesn't impact gameplay at all so can be ignored.