Slow play was an issue on the first day of The Open at Royal Portrush, with Australia's Marc Leishman complaining he felt like he was on the course "for about 12 hours".
In reality the three-ball groups were taking around half that time, but there were frequent, long waits of up to 10 minutes on the par-five seventh.
Rory McIlroy has just concluded his first round at 9.00, having teed off five hours and 50 minutes earlier on 3.10pm. The 2014 champion posted a one-under round of 70, matching his compatriot Shane Lowry to lie three strokes off the lead.
Leishman, who was out at 11.26am but encountered the worst of the weather, said: "It felt like we were on the golf course for about 12 hours. We’d been on the course for three hours through eight holes.
"That was tough to deal with, especially coming from somewhere (LIV Golf) where we play in under four-and-a-half hours.
"You have to deal with all that sort of stuff and I felt like I dealt with it decently well. Just got a little frustrated there."
Newly-crowned US Open champion JJ Spaun received a "bad time" after his group, which included Jon Rahm and Xander Schauffele, were put on the clock.
They took five-and-a-half hours to reach the 18th fairway, with Spaun warned after exceeding his allotted 50-second time limit on his approach to the previous hole.
However, United States Ryder Cup captain Keegan Bradley said it was to be expected.
"There’s a couple long waits. We had about five groups on that par-five seventh. Then we had long waits on all the par-fives. It gets windy like this, it gets backed up," he said.
"I don’t think they can do anything about it. You get to the tee and there’s groups on the tee. What do you do?
"Major championships are long and when you get out here on these blind tee shots with the wind, and you’re going to have guys hitting it in the junk, then it’s going to take a while to find it."
The R&A has been approached for comment.
