His performance today was all the sweeter because it came after a frustratingly slow start this season.

Progress against the virus itself has been frustratingly slow.

A frustratingly slow night bus later and I was home, exhausted but satisfied with my day's hacking.

The ragtag collection of vehicles was making good progress, but it felt frustratingly slow to Curtis.

The process of disposal once a hospital is redundant can be frustratingly slow and unimaginative.

Testing theories and figuring mathematical answers had become a frustratingly slow process.

But those efforts turned out to be frustratingly slow.

The going is frustratingly slow at times, but the scenery is never short of breathtaking.

My progress in learning Spanish has been frustratingly slow.

Tired as he was, Blade found that frustratingly slow.